99912047 has 8 divisors (see below), whose sum is σ = 103898640. Its totient is φ = 95961600.

The previous prime is 99912017. The next prime is 99912053. The reversal of 99912047 is 74021999.

It is a happy number.

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 99912047 - 2⁶ = 99911983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99911995 and 99912013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99912017) 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, 3329 + ... + 14522.

It is an arithmetic number, because the mean of its divisors is an integer number (12987330).

Almost surely, 2^99912047 is an apocalyptic number.

99912047 is a deficient number, since it is larger than the sum of its proper divisors (3986593).

99912047 is a wasteful number, since it uses less digits than its factorization.

99912047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18073.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 99912047 is about 9995.6013826083. The cubic root of 99912047 is about 464.0227628919.

The spelling of 99912047 in words is "ninety-nine million, nine hundred twelve thousand, forty-seven".