403397880 has 64 divisors (see below), whose sum is σ = 1230055200. Its totient is φ = 105807360.

The previous prime is 403397867. The next prime is 403397881. The reversal of 403397880 is 88793304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403397881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20235 + ... + 34874.

Almost surely, 2^403397880 is an apocalyptic number.

403397880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403397880 is an abundant number, since it is smaller than the sum of its proper divisors (826657320).

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

403397880 is a wasteful number, since it uses less digits than its factorization.

403397880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55184 (or 55180 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 403397880 is about 20084.7673623570. The cubic root of 403397880 is about 738.8867360653.

The spelling of 403397880 in words is "four hundred three million, three hundred ninety-seven thousand, eight hundred eighty".