400649006 has 16 divisors (see below), whose sum is σ = 627632928. Its totient is φ = 191452800.

The previous prime is 400648967. The next prime is 400649027. The reversal of 400649006 is 600946004.

It is a self number, because there is not a number n which added to its sum of digits gives 400649006.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 65186 + ... + 71066.

It is an arithmetic number, because the mean of its divisors is an integer number (39227058).

Almost surely, 2^400649006 is an apocalyptic number.

400649006 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

400649006 is a deficient number, since it is larger than the sum of its proper divisors (226983922).

400649006 is a wasteful number, since it uses less digits than its factorization.

400649006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7387.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 400649006 is about 20016.2185739465. The cubic root of 400649006 is about 737.2045774929.

The spelling of 400649006 in words is "four hundred million, six hundred forty-nine thousand, six".