400480881 has 8 divisors (see below), whose sum is σ = 535244544. Its totient is φ = 266352240.

The previous prime is 400480867. The next prime is 400480903. The reversal of 400480881 is 188084004.

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

It is not a de Polignac number, because 400480881 - 2⁷ = 400480753 is a prime.

It is a super-2 number, since 2×400480881² = 320769872093072322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400480831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157281 + ... + 159806.

It is an arithmetic number, because the mean of its divisors is an integer number (66905568).

Almost surely, 2^400480881 is an apocalyptic number.

It is an amenable number.

400480881 is a deficient number, since it is larger than the sum of its proper divisors (134763663).

400480881 is a wasteful number, since it uses less digits than its factorization.

400480881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317511.

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 400480881 is about 20012.0184139432. The cubic root of 400480881 is about 737.1014449434.

The spelling of 400480881 in words is "four hundred million, four hundred eighty thousand, eight hundred eighty-one".