401963634 has 40 divisors (see below), whose sum is σ = 925053228. Its totient is φ = 130364640.

The previous prime is 401963633. The next prime is 401963711. The reversal of 401963634 is 436369104.

401963634 is a `hidden beast` number, since 4 + 0 + 19 + 6 + 3 + 634 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 393824025 + 8139609 = 19845^2 + 2853^2 .

It is not an unprimeable number, because it can be changed into a prime (401963633) 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 19 ways as a sum of consecutive naturals, for example, 27537 + ... + 39524.

Almost surely, 2^401963634 is an apocalyptic number.

401963634 is an abundant number, since it is smaller than the sum of its proper divisors (523089594).

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

401963634 is a wasteful number, since it uses less digits than its factorization.

401963634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67112 (or 67103 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 401963634 is about 20049.0307496397. The cubic root of 401963634 is about 738.0100137448.

The spelling of 401963634 in words is "four hundred one million, nine hundred sixty-three thousand, six hundred thirty-four".