396553880 has 16 divisors (see below), whose sum is σ = 892246320. Its totient is φ = 158621536.

The previous prime is 396553853. The next prime is 396553889. The reversal of 396553880 is 88355693.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396553889) 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, 4956884 + ... + 4956963.

It is an arithmetic number, because the mean of its divisors is an integer number (55765395).

Almost surely, 2^396553880 is an apocalyptic number.

It is an amenable number.

396553880 is an abundant number, since it is smaller than the sum of its proper divisors (495692440).

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

396553880 is a wasteful number, since it uses less digits than its factorization.

396553880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9913858 (or 9913854 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 396553880 is about 19913.6606378636. The cubic root of 396553880 is about 734.6842582311.

The spelling of 396553880 in words is "three hundred ninety-six million, five hundred fifty-three thousand, eight hundred eighty".