400435455 has 32 divisors (see below), whose sum is σ = 733054464. Its totient is φ = 182848896.

The previous prime is 400435447. The next prime is 400435489. The reversal of 400435455 is 554534004.

400435455 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 400435455 - 2³ = 400435447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128344 + ... + 131426.

It is an arithmetic number, because the mean of its divisors is an integer number (22907952).

Almost surely, 2^400435455 is an apocalyptic number.

400435455 is a deficient number, since it is larger than the sum of its proper divisors (332619009).

400435455 is a wasteful number, since it uses less digits than its factorization.

400435455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335.

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 400435455 is about 20010.8834137826. The cubic root of 400435455 is about 737.0735744192.

Adding to 400435455 its reverse (554534004), we get a palindrome (954969459).

The spelling of 400435455 in words is "four hundred million, four hundred thirty-five thousand, four hundred fifty-five".