99000090001 has 4 divisors (see below), whose sum is σ = 99009841392. Its totient is φ = 98990338612.

The previous prime is 99000089999. The next prime is 99000090029. The reversal of 99000090001 is 10009000099.

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 99000090001 - 2¹ = 99000089999 is a prime.

It is a super-2 number, since 2×99000090001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99000090601) 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, 4860451 + ... + 4880776.

It is an arithmetic number, because the mean of its divisors is an integer number (24752460348).

Almost surely, 2^99000090001 is an apocalyptic number.

It is an amenable number.

99000090001 is a deficient number, since it is larger than the sum of its proper divisors (9751391).

99000090001 is a wasteful number, since it uses less digits than its factorization.

99000090001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9751390.

The product of its (nonzero) digits is 729, while the sum is 28.

The spelling of 99000090001 in words is "ninety-nine billion, ninety thousand, one".