403385388 has 48 divisors (see below), whose sum is σ = 1101940224. Its totient is φ = 112440960.

The previous prime is 403385383. The next prime is 403385449. The reversal of 403385388 is 883583304.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (403385383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55120 + ... + 62007.

It is an arithmetic number, because the mean of its divisors is an integer number (22957088).

Almost surely, 2^403385388 is an apocalyptic number.

It is an amenable number.

403385388 is an abundant number, since it is smaller than the sum of its proper divisors (698554836).

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

403385388 is a wasteful number, since it uses less digits than its factorization.

403385388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117182 (or 117180 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 403385388 is about 20084.4563780054. The cubic root of 403385388 is about 738.8791089649.

The spelling of 403385388 in words is "four hundred three million, three hundred eighty-five thousand, three hundred eighty-eight".