9992623861 has 8 divisors (see below), whose sum is σ = 11375002944. Its totient is φ = 8689237920.

The previous prime is 9992623819. The next prime is 9992623891. The reversal of 9992623861 is 1683262999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9992623861 - 2⁷ = 9992623733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9992623891) 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, 19748016 + ... + 19748521.

It is an arithmetic number, because the mean of its divisors is an integer number (1421875368).

Almost surely, 2^9992623861 is an apocalyptic number.

It is an amenable number.

9992623861 is a deficient number, since it is larger than the sum of its proper divisors (1382379083).

9992623861 is a wasteful number, since it uses less digits than its factorization.

9992623861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39496571.

The product of its digits is 2519424, while the sum is 55.

The square root of 9992623861 is about 99963.1125015623. The cubic root of 9992623861 is about 2153.9048460791.

The spelling of 9992623861 in words is "nine billion, nine hundred ninety-two million, six hundred twenty-three thousand, eight hundred sixty-one".