99629121 has 4 divisors (see below), whose sum is σ = 132838832. Its totient is φ = 66419412.

The previous prime is 99629113. The next prime is 99629137. The reversal of 99629121 is 12192699.

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 not a de Polignac number, because 99629121 - 2³ = 99629113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99629121.

It is not an unprimeable number, because it can be changed into a prime (99629021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16604851 + ... + 16604856.

It is an arithmetic number, because the mean of its divisors is an integer number (33209708).

Almost surely, 2^99629121 is an apocalyptic number.

It is an amenable number.

99629121 is a deficient number, since it is larger than the sum of its proper divisors (33209711).

99629121 is a wasteful number, since it uses less digits than its factorization.

99629121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33209710.

The product of its digits is 17496, while the sum is 39.

The square root of 99629121 is about 9981.4388241375. The cubic root of 99629121 is about 463.5843498918.

The spelling of 99629121 in words is "ninety-nine million, six hundred twenty-nine thousand, one hundred twenty-one".