99411621 has 4 divisors (see below), whose sum is σ = 132548832. Its totient is φ = 66274412.

The previous prime is 99411607. The next prime is 99411643. The reversal of 99411621 is 12611499.

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 a cyclic number.

It is not a de Polignac number, because 99411621 - 2⁷ = 99411493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99411661) 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, 16568601 + ... + 16568606.

It is an arithmetic number, because the mean of its divisors is an integer number (33137208).

Almost surely, 2^99411621 is an apocalyptic number.

It is an amenable number.

99411621 is a deficient number, since it is larger than the sum of its proper divisors (33137211).

99411621 is a wasteful number, since it uses less digits than its factorization.

99411621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33137210.

The product of its digits is 3888, while the sum is 33.

The square root of 99411621 is about 9970.5376484922. The cubic root of 99411621 is about 463.2467542913.

The spelling of 99411621 in words is "ninety-nine million, four hundred eleven thousand, six hundred twenty-one".