99107957 has 4 divisors (see below), whose sum is σ = 106731660. Its totient is φ = 91484256.

The previous prime is 99107917. The next prime is 99107959. The reversal of 99107957 is 75970199.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75970199 = 137 ⋅554527.

It can be written as a sum of positive squares in 2 ways, for example, as 24216241 + 74891716 = 4921^2 + 8654^2 .

It is a cyclic number.

It is not a de Polignac number, because 99107957 - 2¹² = 99103861 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 (99107959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3811832 + ... + 3811857.

It is an arithmetic number, because the mean of its divisors is an integer number (26682915).

Almost surely, 2^99107957 is an apocalyptic number.

It is an amenable number.

99107957 is a deficient number, since it is larger than the sum of its proper divisors (7623703).

99107957 is a wasteful number, since it uses less digits than its factorization.

99107957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623702.

The product of its (nonzero) digits is 178605, while the sum is 47.

The square root of 99107957 is about 9955.2979362749. The cubic root of 99107957 is about 462.7745934020.

The spelling of 99107957 in words is "ninety-nine million, one hundred seven thousand, nine hundred fifty-seven".