99472745 has 4 divisors (see below), whose sum is σ = 119367300. Its totient is φ = 79578192.

The previous prime is 99472739. The next prime is 99472753. The reversal of 99472745 is 54727499.

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 75550864 + 23921881 = 8692^2 + 4891^2 .

It is a cyclic number.

It is not a de Polignac number, because 99472745 - 2¹⁴ = 99456361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99472745.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9947270 + ... + 9947279.

It is an arithmetic number, because the mean of its divisors is an integer number (29841825).

Almost surely, 2^99472745 is an apocalyptic number.

It is an amenable number.

99472745 is a deficient number, since it is larger than the sum of its proper divisors (19894555).

99472745 is a wasteful number, since it uses less digits than its factorization.

99472745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19894554.

The product of its digits is 635040, while the sum is 47.

The square root of 99472745 is about 9973.6024083578. The cubic root of 99472745 is about 463.3416784493.

The spelling of 99472745 in words is "ninety-nine million, four hundred seventy-two thousand, seven hundred forty-five".