400480879 has 8 divisors (see below), whose sum is σ = 429513840. Its totient is φ = 372243456.

The previous prime is 400480867. The next prime is 400480903. The reversal of 400480879 is 978084004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400480879 is a prime.

It is a super-2 number, since 2×400480879² = 320769868889225282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400484879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197842 + ... + 199855.

It is an arithmetic number, because the mean of its divisors is an integer number (53689230).

Almost surely, 2^400480879 is an apocalyptic number.

400480879 is a deficient number, since it is larger than the sum of its proper divisors (29032961).

400480879 is a wasteful number, since it uses less digits than its factorization.

400480879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397769.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 400480879 is about 20012.0183639732. The cubic root of 400480879 is about 737.1014437164.

The spelling of 400480879 in words is "four hundred million, four hundred eighty thousand, eight hundred seventy-nine".