400502377 has 12 divisors (see below), whose sum is σ = 442009008. Its totient is φ = 362615000.

The previous prime is 400502363. The next prime is 400502437. The reversal of 400502377 is 773205004.

It is not a de Polignac number, because 400502377 - 2²⁷ = 266284649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400502477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23778 + ... + 36964.

It is an arithmetic number, because the mean of its divisors is an integer number (36834084).

Almost surely, 2^400502377 is an apocalyptic number.

It is an amenable number.

400502377 is a deficient number, since it is larger than the sum of its proper divisors (41506631).

400502377 is a wasteful number, since it uses less digits than its factorization.

400502377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13460 (or 13449 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 400502377 is about 20012.5554839955. Note that the first 3 decimals coincide. The cubic root of 400502377 is about 737.1146327966.

The spelling of 400502377 in words is "four hundred million, five hundred two thousand, three hundred seventy-seven".