397144748 has 144 divisors (see below), whose sum is σ = 960970752. Its totient is φ = 139708800.

The previous prime is 397144721. The next prime is 397144777. The reversal of 397144748 is 847441793.

It is a happy number.

It is a super-3 number, since 3×397144748³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3127061 + ... + 3127187.

It is an arithmetic number, because the mean of its divisors is an integer number (6673408).

Almost surely, 2^397144748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397144748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480485376).

397144748 is an abundant number, since it is smaller than the sum of its proper divisors (563826004).

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

397144748 is a wasteful number, since it uses less digits than its factorization.

397144748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 231 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 397144748 is about 19928.4908610763. The cubic root of 397144748 is about 735.0489720096.

The spelling of 397144748 in words is "three hundred ninety-seven million, one hundred forty-four thousand, seven hundred forty-eight".