99988937 has 4 divisors (see below), whose sum is σ = 100049556. Its totient is φ = 99928320.

The previous prime is 99988913. The next prime is 99988961. The reversal of 99988937 is 73988999.

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

It is an interprime number because it is at equal distance from previous prime (99988913) and next prime (99988961).

It can be written as a sum of positive squares in 2 ways, for example, as 66765241 + 33223696 = 8171^2 + 5764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99988937 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 99988937.

It is not an unprimeable number, because it can be changed into a prime (99988997) by changing a digit.

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, 27764 + ... + 31157.

It is an arithmetic number, because the mean of its divisors is an integer number (25012389).

Almost surely, 2^99988937 is an apocalyptic number.

It is an amenable number.

99988937 is a deficient number, since it is larger than the sum of its proper divisors (60619).

99988937 is a wasteful number, since it uses less digits than its factorization.

99988937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60618.

The product of its digits is 8817984, while the sum is 62.

The square root of 99988937 is about 9999.4468347004. The cubic root of 99988937 is about 464.1417660976.

Adding to 99988937 its sum of digits (62), we get a palindrome (99988999).

The spelling of 99988937 in words is "ninety-nine million, nine hundred eighty-eight thousand, nine hundred thirty-seven".