400354499 has 4 divisors (see below), whose sum is σ = 400575936. Its totient is φ = 400133064.

The previous prime is 400354489. The next prime is 400354519. The reversal of 400354499 is 994453004.

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

It is a cyclic number.

It is not a de Polignac number, because 400354499 - 2²⁴ = 383577283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400354489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107984 + ... + 111629.

It is an arithmetic number, because the mean of its divisors is an integer number (100143984).

Almost surely, 2^400354499 is an apocalyptic number.

400354499 is a deficient number, since it is larger than the sum of its proper divisors (221437).

400354499 is a wasteful number, since it uses less digits than its factorization.

400354499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221436.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 400354499 is about 20008.8605122831. The cubic root of 400354499 is about 737.0238997053.

The spelling of 400354499 in words is "four hundred million, three hundred fifty-four thousand, four hundred ninety-nine".