400454164 has 12 divisors (see below), whose sum is σ = 764503488. Its totient is φ = 182024600.

The previous prime is 400454161. The next prime is 400454179. The reversal of 400454164 is 461454004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400454161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4550572 + ... + 4550659.

It is an arithmetic number, because the mean of its divisors is an integer number (63708624).

Almost surely, 2^400454164 is an apocalyptic number.

400454164 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400454164 is a deficient number, since it is larger than the sum of its proper divisors (364049324).

400454164 is a wasteful number, since it uses less digits than its factorization.

400454164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101246 (or 9101244 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 400454164 is about 20011.3508789387. The cubic root of 400454164 is about 737.0850533351.

The spelling of 400454164 in words is "four hundred million, four hundred fifty-four thousand, one hundred sixty-four".