397415460 has 288 divisors, whose sum is σ = 1334374272. Its totient is φ = 87736320.

The previous prime is 397415453. The next prime is 397415467. The reversal of 397415460 is 64514793.

It is an interprime number because it is at equal distance from previous prime (397415453) and next prime (397415467).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397415467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9242199 + ... + 9242241.

It is an arithmetic number, because the mean of its divisors is an integer number (4633244).

Almost surely, 2^397415460 is an apocalyptic number.

397415460 is a gapful number since it is divisible by the number (30) 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 397415460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667187136).

397415460 is an abundant number, since it is smaller than the sum of its proper divisors (936958812).

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

397415460 is a wasteful number, since it uses less digits than its factorization.

397415460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 397415460 is about 19935.2817888286. The cubic root of 397415460 is about 735.2159483935.

The spelling of 397415460 in words is "three hundred ninety-seven million, four hundred fifteen thousand, four hundred sixty".