99292421449 has 9 divisors (see below), whose sum is σ = 107522265063. Its totient is φ = 91650761592.

The previous prime is 99292421443. The next prime is 99292421471. The reversal of 99292421449 is 94412429299.

The square root of 99292421449 is 315107.

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., 14688228025 + 84604193424 = 121195^2 + 290868^2 .

It is not a de Polignac number, because 99292421449 - 2²⁵ = 99258867017 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 99292421449.

It is not an unprimeable number, because it can be changed into a prime (99292421443) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4084272 + ... + 4108510.

Almost surely, 2^99292421449 is an apocalyptic number.

99292421449 is the 315107-th square number.

99292421449 is the 157554-th centered octagonal number.

It is an amenable number.

99292421449 is a deficient number, since it is larger than the sum of its proper divisors (8229843614).

99292421449 is an frugal number, since it uses more digits than its factorization.

99292421449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48504 (or 24252 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 55.

The spelling of 99292421449 in words is "ninety-nine billion, two hundred ninety-two million, four hundred twenty-one thousand, four hundred forty-nine".