400737007406 has 16 divisors (see below), whose sum is σ = 601586110944. Its totient is φ = 200208353184.

The previous prime is 400737007369. The next prime is 400737007453. The reversal of 400737007406 is 604700737004.

It is a self number, because there is not a number n which added to its sum of digits gives 400737007406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27045656 + ... + 27060468.

It is an arithmetic number, because the mean of its divisors is an integer number (37599131934).

Almost surely, 2^400737007406 is an apocalyptic number.

400737007406 is a deficient number, since it is larger than the sum of its proper divisors (200849103538).

400737007406 is a wasteful number, since it uses less digits than its factorization.

400737007406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24715.

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 400737007406 in words is "four hundred billion, seven hundred thirty-seven million, seven thousand, four hundred six".