99291945 has 16 divisors (see below), whose sum is σ = 162562752. Its totient is φ = 51723840.

The previous prime is 99291937. The next prime is 99291947. The reversal of 99291945 is 54919299.

It is not a de Polignac number, because 99291945 - 2³ = 99291937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99291894 and 99291903.

It is not an unprimeable number, because it can be changed into a prime (99291947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76326 + ... + 77615.

It is an arithmetic number, because the mean of its divisors is an integer number (10160172).

Almost surely, 2^99291945 is an apocalyptic number.

It is an amenable number.

99291945 is a deficient number, since it is larger than the sum of its proper divisors (63270807).

99291945 is a wasteful number, since it uses less digits than its factorization.

99291945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153992.

The product of its digits is 262440, while the sum is 48.

The square root of 99291945 is about 9964.5343594169. The cubic root of 99291945 is about 463.0607875008.

The spelling of 99291945 in words is "ninety-nine million, two hundred ninety-one thousand, nine hundred forty-five".