397664148 has 96 divisors (see below), whose sum is σ = 1122903040. Its totient is φ = 106997760.

The previous prime is 397664147. The next prime is 397664149. The reversal of 397664148 is 841466793.

It is an interprime number because it is at equal distance from previous prime (397664147) and next prime (397664149).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 397664097 and 397664106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397664143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307383 + ... + 308673.

Almost surely, 2^397664148 is an apocalyptic number.

397664148 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397664148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561451520).

397664148 is an abundant number, since it is smaller than the sum of its proper divisors (725238892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397664148 is a wasteful number, since it uses less digits than its factorization.

397664148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1515 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 397664148 is about 19941.5181969679. The cubic root of 397664148 is about 735.3692734629.

The spelling of 397664148 in words is "three hundred ninety-seven million, six hundred sixty-four thousand, one hundred forty-eight".