99308749 has 4 divisors (see below), whose sum is σ = 99328960. Its totient is φ = 99288540.

The previous prime is 99308743. The next prime is 99308771. The reversal of 99308749 is 94780399.

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 99308749 - 2⁷ = 99308621 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 (99308743) 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, 2542 + ... + 14320.

It is an arithmetic number, because the mean of its divisors is an integer number (24832240).

Almost surely, 2^99308749 is an apocalyptic number.

It is an amenable number.

99308749 is a deficient number, since it is larger than the sum of its proper divisors (20211).

99308749 is a wasteful number, since it uses less digits than its factorization.

99308749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20210.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 99308749 is about 9965.3775141738. The cubic root of 99308749 is about 463.0869085675.

The spelling of 99308749 in words is "ninety-nine million, three hundred eight thousand, seven hundred forty-nine".