397778044 has 12 divisors (see below), whose sum is σ = 699412168. Its totient is φ = 197946000.

The previous prime is 397778041. The next prime is 397778047. The reversal of 397778044 is 440877793.

It is an interprime number because it is at equal distance from previous prime (397778041) and next prime (397778047).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397778041) 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, 234807 + ... + 236494.

Almost surely, 2^397778044 is an apocalyptic number.

It is an amenable number.

397778044 is a deficient number, since it is larger than the sum of its proper divisors (301634124).

397778044 is a wasteful number, since it uses less digits than its factorization.

397778044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471516 (or 471514 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 49.

The square root of 397778044 is about 19944.3737429883. The cubic root of 397778044 is about 735.4394730893.

The spelling of 397778044 in words is "three hundred ninety-seven million, seven hundred seventy-eight thousand, forty-four".