400622660 has 24 divisors (see below), whose sum is σ = 843333120. Its totient is φ = 159863264.

The previous prime is 400622611. The next prime is 400622693. The reversal of 400622660 is 66226004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15524 + ... + 32283.

It is an arithmetic number, because the mean of its divisors is an integer number (35138880).

Almost surely, 2^400622660 is an apocalyptic number.

It is an amenable number.

400622660 is an abundant number, since it is smaller than the sum of its proper divisors (442710460).

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

400622660 is a wasteful number, since it uses less digits than its factorization.

400622660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48235 (or 48233 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 400622660 is about 20015.5604468124. The cubic root of 400622660 is about 737.1884180306.

Adding to 400622660 its reverse (66226004), we get a palindrome (466848664).

The spelling of 400622660 in words is "four hundred million, six hundred twenty-two thousand, six hundred sixty".