99129788 has 12 divisors (see below), whose sum is σ = 183681792. Its totient is φ = 46649280.

The previous prime is 99129787. The next prime is 99129799. The reversal of 99129788 is 88792199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99129781) 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, 728828 + ... + 728963.

It is an arithmetic number, because the mean of its divisors is an integer number (15306816).

Almost surely, 2^99129788 is an apocalyptic number.

It is an amenable number.

99129788 is a deficient number, since it is larger than the sum of its proper divisors (84552004).

99129788 is a wasteful number, since it uses less digits than its factorization.

99129788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457812 (or 1457810 counting only the distinct ones).

The product of its digits is 653184, while the sum is 53.

The square root of 99129788 is about 9956.3943272653. The cubic root of 99129788 is about 462.8085701237.

The spelling of 99129788 in words is "ninety-nine million, one hundred twenty-nine thousand, seven hundred eighty-eight".