400264666 has 8 divisors (see below), whose sum is σ = 600806304. Its totient is φ = 199995900.

The previous prime is 400264651. The next prime is 400264687. The reversal of 400264666 is 666462004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 64510 + ... + 70441.

It is an arithmetic number, because the mean of its divisors is an integer number (75100788).

Almost surely, 2^400264666 is an apocalyptic number.

400264666 is a deficient number, since it is larger than the sum of its proper divisors (200541638).

400264666 is a wasteful number, since it uses less digits than its factorization.

400264666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136436.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 400264666 is about 20006.6155558605. The cubic root of 400264666 is about 736.9687702131.

The spelling of 400264666 in words is "four hundred million, two hundred sixty-four thousand, six hundred sixty-six".