99004591 has 8 divisors (see below), whose sum is σ = 114187040. Its totient is φ = 84081888.

The previous prime is 99004559. The next prime is 99004603. The reversal of 99004591 is 19540099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99004591 - 2⁵ = 99004559 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 99004591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99004541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64116 + ... + 65641.

It is an arithmetic number, because the mean of its divisors is an integer number (14273380).

Almost surely, 2^99004591 is an apocalyptic number.

99004591 is a deficient number, since it is larger than the sum of its proper divisors (15182449).

99004591 is a wasteful number, since it uses less digits than its factorization.

99004591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129873.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 99004591 is about 9950.1050748221. The cubic root of 99004591 is about 462.6136517385.

The spelling of 99004591 in words is "ninety-nine million, four thousand, five hundred ninety-one".