99992605 has 4 divisors (see below), whose sum is σ = 119991132. Its totient is φ = 79994080.

The previous prime is 99992539. The next prime is 99992617. The reversal of 99992605 is 50629999.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42263001 + 57729604 = 6501^2 + 7598^2 .

It is not a de Polignac number, because 99992605 - 2¹³ = 99984413 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9999256 + ... + 9999265.

It is an arithmetic number, because the mean of its divisors is an integer number (29997783).

Almost surely, 2^99992605 is an apocalyptic number.

It is an amenable number.

99992605 is a deficient number, since it is larger than the sum of its proper divisors (19998527).

99992605 is a wasteful number, since it uses less digits than its factorization.

99992605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19998526.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 99992605 is about 9999.6302431640. The cubic root of 99992605 is about 464.1474415628.

The spelling of 99992605 in words is "ninety-nine million, nine hundred ninety-two thousand, six hundred five".