400998454 has 32 divisors (see below), whose sum is σ = 637857792. Its totient is φ = 188784000.

The previous prime is 400998427. The next prime is 400998487. The reversal of 400998454 is 454899004.

It is a super-2 number, since 2×400998454² = 321599520220780232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400998454.

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, 701989 + ... + 702559.

It is an arithmetic number, because the mean of its divisors is an integer number (19933056).

Almost surely, 2^400998454 is an apocalyptic number.

400998454 is a deficient number, since it is larger than the sum of its proper divisors (236859338).

400998454 is a wasteful number, since it uses less digits than its factorization.

400998454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 400998454 is about 20024.9457926857. The cubic root of 400998454 is about 737.4188463417.

The spelling of 400998454 in words is "four hundred million, nine hundred ninety-eight thousand, four hundred fifty-four".