9099621659 has 4 divisors (see below), whose sum is σ = 9142748040. Its totient is φ = 9056495280.

The previous prime is 9099621649. The next prime is 9099621689. The reversal of 9099621659 is 9561269909.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9099621659 - 2¹² = 9099617563 is a prime.

It is a super-2 number, since 2×9099621659² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9099621649) 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, 21562874 + ... + 21563295.

It is an arithmetic number, because the mean of its divisors is an integer number (2285687010).

Almost surely, 2^9099621659 is an apocalyptic number.

9099621659 is a deficient number, since it is larger than the sum of its proper divisors (43126381).

9099621659 is a wasteful number, since it uses less digits than its factorization.

9099621659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43126380.

The product of its (nonzero) digits is 2361960, while the sum is 56.

The square root of 9099621659 is about 95391.9370754153. The cubic root of 9099621659 is about 2087.7305447457.

The spelling of 9099621659 in words is "nine billion, ninety-nine million, six hundred twenty-one thousand, six hundred fifty-nine".