397841952 has 48 divisors (see below), whose sum is σ = 1080354240. Its totient is φ = 128040192.

The previous prime is 397841947. The next prime is 397841957. The reversal of 397841952 is 259148793.

It is an interprime number because it is at equal distance from previous prime (397841947) and next prime (397841957).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (397841957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68668 + ... + 74235.

It is an arithmetic number, because the mean of its divisors is an integer number (22507380).

Almost surely, 2^397841952 is an apocalyptic number.

397841952 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

397841952 is an abundant number, since it is smaller than the sum of its proper divisors (682512288).

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

397841952 is a wasteful number, since it uses less digits than its factorization.

397841952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142945 (or 142937 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 397841952 is about 19945.9758347392. The cubic root of 397841952 is about 735.4788568190.

The spelling of 397841952 in words is "three hundred ninety-seven million, eight hundred forty-one thousand, nine hundred fifty-two".