400464686 has 4 divisors (see below), whose sum is σ = 600697032. Its totient is φ = 200232342.

The previous prime is 400464679. The next prime is 400464709. The reversal of 400464686 is 686464004.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 100116170 + ... + 100116173.

It is an arithmetic number, because the mean of its divisors is an integer number (150174258).

Almost surely, 2^400464686 is an apocalyptic number.

400464686 is a deficient number, since it is larger than the sum of its proper divisors (200232346).

400464686 is a wasteful number, since it uses less digits than its factorization.

400464686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200232345.

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 400464686 is about 20011.6137780040. The cubic root of 400464686 is about 737.0915089561.

The spelling of 400464686 in words is "four hundred million, four hundred sixty-four thousand, six hundred eighty-six".