99872390947 has 8 divisors (see below), whose sum is σ = 114905916000. Its totient is φ = 85030376064.

The previous prime is 99872390939. The next prime is 99872390957. The reversal of 99872390947 is 74909327899.

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

It is a cyclic number.

It is not a de Polignac number, because 99872390947 - 2³ = 99872390939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99872390957) 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, 47876422 + ... + 47878507.

It is an arithmetic number, because the mean of its divisors is an integer number (14363239500).

Almost surely, 2^99872390947 is an apocalyptic number.

99872390947 is a deficient number, since it is larger than the sum of its proper divisors (15033525053).

99872390947 is a wasteful number, since it uses less digits than its factorization.

99872390947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95755085.

The product of its (nonzero) digits is 61725888, while the sum is 67.

The spelling of 99872390947 in words is "ninety-nine billion, eight hundred seventy-two million, three hundred ninety thousand, nine hundred forty-seven".