8400631534 has 16 divisors (see below), whose sum is σ = 13190639616. Its totient is φ = 4007568600.

The previous prime is 8400631529. The next prime is 8400631541. The reversal of 8400631534 is 4351360048.

It is a happy number.

It is a super-2 number, since 2×8400631534² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8400631534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949782 + ... + 958585.

It is an arithmetic number, because the mean of its divisors is an integer number (824414976).

Almost surely, 2^8400631534 is an apocalyptic number.

8400631534 is a deficient number, since it is larger than the sum of its proper divisors (4790008082).

8400631534 is a wasteful number, since it uses less digits than its factorization.

8400631534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908471.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 8400631534 is about 91654.9591347899. The cubic root of 8400631534 is about 2032.8436559131.

The spelling of 8400631534 in words is "eight billion, four hundred million, six hundred thirty-one thousand, five hundred thirty-four".