99056309 has 4 divisors (see below), whose sum is σ = 108061440. Its totient is φ = 90051180.

The previous prime is 99056261. The next prime is 99056327. The reversal of 99056309 is 90365099.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99056309 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 (99056359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4502549 + ... + 4502570.

It is an arithmetic number, because the mean of its divisors is an integer number (27015360).

Almost surely, 2^99056309 is an apocalyptic number.

It is an amenable number.

99056309 is a deficient number, since it is larger than the sum of its proper divisors (9005131).

99056309 is a wasteful number, since it uses less digits than its factorization.

99056309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9005130.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 99056309 is about 9952.7036025394. The cubic root of 99056309 is about 462.6941910608.

The spelling of 99056309 in words is "ninety-nine million, fifty-six thousand, three hundred nine".