99937309 has 4 divisors (see below), whose sum is σ = 100535904. Its totient is φ = 99338716.

The previous prime is 99937303. The next prime is 99937351. The reversal of 99937309 is 90373999.

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 not a de Polignac number, because 99937309 - 2¹³ = 99929117 is a prime.

It is a super-2 number, since 2×99937309² = 19974931460322962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99937303) 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, 299047 + ... + 299380.

It is an arithmetic number, because the mean of its divisors is an integer number (25133976).

Almost surely, 2^99937309 is an apocalyptic number.

It is an amenable number.

99937309 is a deficient number, since it is larger than the sum of its proper divisors (598595).

99937309 is a wasteful number, since it uses less digits than its factorization.

99937309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598594.

The product of its (nonzero) digits is 413343, while the sum is 49.

The square root of 99937309 is about 9996.8649585758. The cubic root of 99937309 is about 464.0618678033.

The spelling of 99937309 in words is "ninety-nine million, nine hundred thirty-seven thousand, three hundred nine".