400404804403 has 12 divisors (see below), whose sum is σ = 414890573040. Its totient is φ = 386408832240.

The previous prime is 400404804383. The next prime is 400404804439. The reversal of 400404804403 is 304408404004.

It is a de Polignac number, because none of the positive numbers 2^k-400404804403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400404804103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235300 + ... + 925297.

It is an arithmetic number, because the mean of its divisors is an integer number (34574214420).

Almost surely, 2^400404804403 is an apocalyptic number.

400404804403 is a deficient number, since it is larger than the sum of its proper divisors (14485768637).

400404804403 is a wasteful number, since it uses less digits than its factorization.

400404804403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161018 (or 1160987 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

The spelling of 400404804403 in words is "four hundred billion, four hundred four million, eight hundred four thousand, four hundred three".