99291845 has 4 divisors (see below), whose sum is σ = 119150220. Its totient is φ = 79433472.

The previous prime is 99291839. The next prime is 99291869. The reversal of 99291845 is 54819299.

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 54789604 + 44502241 = 7402^2 + 6671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99291845 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99291845.

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, 9929180 + ... + 9929189.

It is an arithmetic number, because the mean of its divisors is an integer number (29787555).

Almost surely, 2^99291845 is an apocalyptic number.

It is an amenable number.

99291845 is a deficient number, since it is larger than the sum of its proper divisors (19858375).

99291845 is a wasteful number, since it uses less digits than its factorization.

99291845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19858374.

The product of its digits is 233280, while the sum is 47.

The square root of 99291845 is about 9964.5293416197. The cubic root of 99291845 is about 463.0606320464.

The spelling of 99291845 in words is "ninety-nine million, two hundred ninety-one thousand, eight hundred forty-five".