400476940 has 12 divisors (see below), whose sum is σ = 841001616. Its totient is φ = 160190768.

The previous prime is 400476899. The next prime is 400476959. The reversal of 400476940 is 49674004.

It is a junction number, because it is equal to n+sod(n) for n = 400476896 and 400476905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10011904 + ... + 10011943.

It is an arithmetic number, because the mean of its divisors is an integer number (70083468).

Almost surely, 2^400476940 is an apocalyptic number.

It is an amenable number.

400476940 is an abundant number, since it is smaller than the sum of its proper divisors (440524676).

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

400476940 is a wasteful number, since it uses less digits than its factorization.

400476940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20023856 (or 20023854 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 400476940 is about 20011.9199478711. The cubic root of 400476940 is about 737.0990270782.

The spelling of 400476940 in words is "four hundred million, four hundred seventy-six thousand, nine hundred forty".