397567460 has 12 divisors (see below), whose sum is σ = 834891708. Its totient is φ = 159026976.

The previous prime is 397567459. The next prime is 397567463. The reversal of 397567460 is 64765793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42094144 + 355473316 = 6488^2 + 18854^2 .

It is not an unprimeable number, because it can be changed into a prime (397567463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9939167 + ... + 9939206.

It is an arithmetic number, because the mean of its divisors is an integer number (69574309).

Almost surely, 2^397567460 is an apocalyptic number.

It is an amenable number.

397567460 is an abundant number, since it is smaller than the sum of its proper divisors (437324248).

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

397567460 is a wasteful number, since it uses less digits than its factorization.

397567460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19878382 (or 19878380 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 47.

The square root of 397567460 is about 19939.0937607505. The cubic root of 397567460 is about 735.3096694411.

The spelling of 397567460 in words is "three hundred ninety-seven million, five hundred sixty-seven thousand, four hundred sixty".