400969740 has 48 divisors (see below), whose sum is σ = 1153065312. Its totient is φ = 104034816.

The previous prime is 400969733. The next prime is 400969781. The reversal of 400969740 is 47969004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88089 + ... + 92528.

It is an arithmetic number, because the mean of its divisors is an integer number (24022194).

Almost surely, 2^400969740 is an apocalyptic number.

It is an amenable number.

400969740 is an abundant number, since it is smaller than the sum of its proper divisors (752095572).

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

400969740 is a wasteful number, since it uses less digits than its factorization.

400969740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180666 (or 180664 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 400969740 is about 20024.2288241021. The cubic root of 400969740 is about 737.4012446528.

The spelling of 400969740 in words is "four hundred million, nine hundred sixty-nine thousand, seven hundred forty".