99539619001 has 9 divisors (see below), whose sum is σ = 102314587599. Its totient is φ = 96838001064.

The previous prime is 99539618963. The next prime is 99539619037. The reversal of 99539619001 is 10091693599.

The square root of 99539619001 is 315499.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 89069418025 + 10470200976 = 298445^2 + 102324^2 .

It is not a de Polignac number, because 99539619001 - 2¹⁵ = 99539586233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99539619001.

It is not an unprimeable number, because it can be changed into a prime (99539619071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11669200 + ... + 11677726.

It is an arithmetic number, because the mean of its divisors is an integer number (11368287511).

Almost surely, 2^99539619001 is an apocalyptic number.

99539619001 is the 315499-th square number.

99539619001 is the 157750-th centered octagonal number.

It is an amenable number.

99539619001 is a deficient number, since it is larger than the sum of its proper divisors (2774968598).

99539619001 is an frugal number, since it uses more digits than its factorization.

99539619001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17128 (or 8564 counting only the distinct ones).

The product of its (nonzero) digits is 590490, while the sum is 52.

The spelling of 99539619001 in words is "ninety-nine billion, five hundred thirty-nine million, six hundred nineteen thousand, one".