99047231 has 4 divisors (see below), whose sum is σ = 99105864. Its totient is φ = 98988600.

The previous prime is 99047197. The next prime is 99047237. The reversal of 99047231 is 13274099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99047231 - 2¹⁸ = 98785087 is a prime.

It is a super-2 number, since 2×99047231² = 19620707937534722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99047191 and 99047200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99047237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26705 + ... + 30186.

It is an arithmetic number, because the mean of its divisors is an integer number (24776466).

Almost surely, 2^99047231 is an apocalyptic number.

99047231 is a deficient number, since it is larger than the sum of its proper divisors (58633).

99047231 is a wasteful number, since it uses less digits than its factorization.

99047231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58632.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 99047231 is about 9952.2475351048. The cubic root of 99047231 is about 462.6800561167.

The spelling of 99047231 in words is "ninety-nine million, forty-seven thousand, two hundred thirty-one".