99999537 has 8 divisors (see below), whose sum is σ = 145453920. Its totient is φ = 60605760.

The previous prime is 99999517. The next prime is 99999539. The reversal of 99999537 is 73599999.

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

It is not a de Polignac number, because 99999537 - 2¹⁰ = 99998513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99999539) 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, 1515112 + ... + 1515177.

It is an arithmetic number, because the mean of its divisors is an integer number (18181740).

Almost surely, 2^99999537 is an apocalyptic number.

It is an amenable number.

99999537 is a deficient number, since it is larger than the sum of its proper divisors (45454383).

99999537 is a wasteful number, since it uses less digits than its factorization.

99999537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030303.

The product of its digits is 6200145, while the sum is 60.

The square root of 99999537 is about 9999.9768499732. The cubic root of 99999537 is about 464.1581670083.

The spelling of 99999537 in words is "ninety-nine million, nine hundred ninety-nine thousand, five hundred thirty-seven".