400087455 has 8 divisors (see below), whose sum is σ = 640139952. Its totient is φ = 213379968.

The previous prime is 400087433. The next prime is 400087477. The reversal of 400087455 is 554780004.

It is an interprime number because it is at equal distance from previous prime (400087433) and next prime (400087477).

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

It is not a de Polignac number, because 400087455 - 2⁹ = 400086943 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 13336234 + ... + 13336263.

It is an arithmetic number, because the mean of its divisors is an integer number (80017494).

Almost surely, 2^400087455 is an apocalyptic number.

400087455 is a deficient number, since it is larger than the sum of its proper divisors (240052497).

400087455 is a wasteful number, since it uses less digits than its factorization.

400087455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26672505.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 400087455 is about 20002.1862555072. The cubic root of 400087455 is about 736.8599936442.

The spelling of 400087455 in words is "four hundred million, eighty-seven thousand, four hundred fifty-five".