9631439994 has 32 divisors (see below), whose sum is σ = 21028962240. Its totient is φ = 2916547200.

The previous prime is 9631439969. The next prime is 9631440023. The reversal of 9631439994 is 4999341369.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43254 + ... + 145374.

It is an arithmetic number, because the mean of its divisors is an integer number (657155070).

Almost surely, 2^9631439994 is an apocalyptic number.

9631439994 is an abundant number, since it is smaller than the sum of its proper divisors (11397522246).

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

9631439994 is a wasteful number, since it uses less digits than its factorization.

9631439994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103566.

The product of its digits is 5668704, while the sum is 57.

The square root of 9631439994 is about 98139.9001120339. The cubic root of 9631439994 is about 2127.6347475806.

The spelling of 9631439994 in words is "nine billion, six hundred thirty-one million, four hundred thirty-nine thousand, nine hundred ninety-four".