400880830 has 32 divisors (see below), whose sum is σ = 843853824. Its totient is φ = 134247456.

The previous prime is 400880827. The next prime is 400880849. The reversal of 400880830 is 38088004.

It is a super-2 number, since 2×400880830² = 321410879722977800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400880792 and 400880801.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 63582 + ... + 69601.

It is an arithmetic number, because the mean of its divisors is an integer number (26370432).

Almost surely, 2^400880830 is an apocalyptic number.

400880830 is an abundant number, since it is smaller than the sum of its proper divisors (442972994).

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

400880830 is a wasteful number, since it uses less digits than its factorization.

400880830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133240.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 400880830 is about 20022.0086404936. The cubic root of 400880830 is about 737.3467374713.

The spelling of 400880830 in words is "four hundred million, eight hundred eighty thousand, eight hundred thirty".