99129945 has 16 divisors (see below), whose sum is σ = 158739840. Its totient is φ = 52825344.

The previous prime is 99129929. The next prime is 99129983. The reversal of 99129945 is 54992199.

It is not a de Polignac number, because 99129945 - 2⁴ = 99129929 is a prime.

It is a super-3 number, since 3×99129945³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99129894 and 99129903.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24796 + ... + 28514.

It is an arithmetic number, because the mean of its divisors is an integer number (9921240).

Almost surely, 2^99129945 is an apocalyptic number.

It is an amenable number.

99129945 is a deficient number, since it is larger than the sum of its proper divisors (59609895).

99129945 is a wasteful number, since it uses less digits than its factorization.

99129945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504.

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

The square root of 99129945 is about 9956.4022116425. The cubic root of 99129945 is about 462.8088144529.

The spelling of 99129945 in words is "ninety-nine million, one hundred twenty-nine thousand, nine hundred forty-five".