397773904 has 40 divisors (see below), whose sum is σ = 856632672. Its totient is φ = 177390720.

The previous prime is 397773881. The next prime is 397773907. The reversal of 397773904 is 409377793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397773907) 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, 11994 + ... + 30649.

Almost surely, 2^397773904 is an apocalyptic number.

It is an amenable number.

397773904 is an abundant number, since it is smaller than the sum of its proper divisors (458858768).

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

397773904 is a wasteful number, since it uses less digits than its factorization.

397773904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42715 (or 42709 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 49.

The square root of 397773904 is about 19944.2699540495. The cubic root of 397773904 is about 735.4369216413.

It can be divided in two parts, 39777 and 3904, that added together give a square (43681 = 209²).

The spelling of 397773904 in words is "three hundred ninety-seven million, seven hundred seventy-three thousand, nine hundred four".