400634633 has 8 divisors (see below), whose sum is σ = 467212800. Its totient is φ = 343400820.

The previous prime is 400634629. The next prime is 400634639. The reversal of 400634633 is 336436004.

It is not a de Polignac number, because 400634633 - 2² = 400634629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400634596 and 400634605.

It is not an unprimeable number, because it can be changed into a prime (400634639) 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, 583673 + ... + 584358.

It is an arithmetic number, because the mean of its divisors is an integer number (58401600).

Almost surely, 2^400634633 is an apocalyptic number.

It is an amenable number.

400634633 is a deficient number, since it is larger than the sum of its proper divisors (66578167).

400634633 is an equidigital number, since it uses as much as digits as its factorization.

400634633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168052 (or 1168038 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

The square root of 400634633 is about 20015.8595368773. The cubic root of 400634633 is about 737.1957618231.

The spelling of 400634633 in words is "four hundred million, six hundred thirty-four thousand, six hundred thirty-three".