400986066 has 32 divisors (see below), whose sum is σ = 878310720. Its totient is φ = 121287744.

The previous prime is 400986043. The next prime is 400986073. The reversal of 400986066 is 660689004.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 38965 + ... + 48168.

It is an arithmetic number, because the mean of its divisors is an integer number (27447210).

Almost surely, 2^400986066 is an apocalyptic number.

400986066 is an abundant number, since it is smaller than the sum of its proper divisors (477324654).

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

400986066 is a wasteful number, since it uses less digits than its factorization.

400986066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87210.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 400986066 is about 20024.6364761011. The cubic root of 400986066 is about 737.4112525978.

It can be divided in two parts, 40098 and 6066, that added together give a palindrome (46164).

The spelling of 400986066 in words is "four hundred million, nine hundred eighty-six thousand, sixty-six".