397384418 has 16 divisors (see below), whose sum is σ = 633771864. Its totient is φ = 186224640.

The previous prime is 397384417. The next prime is 397384441. The reversal of 397384418 is 814483793.

It can be written as a sum of positive squares in 4 ways, for example, as 362255089 + 35129329 = 19033^2 + 5927^2 .

It is not an unprimeable number, because it can be changed into a prime (397384417) 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, 16055 + ... + 32442.

Almost surely, 2^397384418 is an apocalyptic number.

397384418 is a deficient number, since it is larger than the sum of its proper divisors (236387446).

397384418 is a wasteful number, since it uses less digits than its factorization.

397384418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48757.

The product of its digits is 580608, while the sum is 47.

The square root of 397384418 is about 19934.5032042436. The cubic root of 397384418 is about 735.1968053975.

The spelling of 397384418 in words is "three hundred ninety-seven million, three hundred eighty-four thousand, four hundred eighteen".