400949855 has 8 divisors (see below), whose sum is σ = 482172912. Its totient is φ = 320071168.

The previous prime is 400949839. The next prime is 400949867. The reversal of 400949855 is 558949004.

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

It is a cyclic number.

It is not a de Polignac number, because 400949855 - 2⁴ = 400949839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83522 + ... + 88191.

It is an arithmetic number, because the mean of its divisors is an integer number (60271614).

Almost surely, 2^400949855 is an apocalyptic number.

400949855 is a deficient number, since it is larger than the sum of its proper divisors (81223057).

400949855 is a wasteful number, since it uses less digits than its factorization.

400949855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172185.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 400949855 is about 20023.7322944550. The cubic root of 400949855 is about 737.3890546505.

The spelling of 400949855 in words is "four hundred million, nine hundred forty-nine thousand, eight hundred fifty-five".