400436166 has 32 divisors (see below), whose sum is σ = 874637568. Its totient is φ = 121474080.

The previous prime is 400436149. The next prime is 400436189. The reversal of 400436166 is 661634004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30616 + ... + 41691.

It is an arithmetic number, because the mean of its divisors is an integer number (27332424).

Almost surely, 2^400436166 is an apocalyptic number.

400436166 is an abundant number, since it is smaller than the sum of its proper divisors (474201402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400436166 is a wasteful number, since it uses less digits than its factorization.

400436166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72396.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 400436166 is about 20010.9011791074. The cubic root of 400436166 is about 737.0740106601.

The spelling of 400436166 in words is "four hundred million, four hundred thirty-six thousand, one hundred sixty-six".