99888313 has 6 divisors (see below), whose sum is σ = 116196666. Its totient is φ = 85618512.

The previous prime is 99888253. The next prime is 99888331. The reversal of 99888313 is 31388899.

It can be written as a sum of positive squares in only one way, i.e., 92775424 + 7112889 = 9632^2 + 2667^2 .

It is a de Polignac number, because none of the positive numbers 2^k-99888313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 2038537 = 99888313 / (9 + 9 + 8 + 8 + 8 + 3 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99886313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1019220 + ... + 1019317.

It is an arithmetic number, because the mean of its divisors is an integer number (19366111).

Almost surely, 2^99888313 is an apocalyptic number.

It is an amenable number.

99888313 is a deficient number, since it is larger than the sum of its proper divisors (16308353).

99888313 is a wasteful number, since it uses less digits than its factorization.

99888313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038551 (or 2038544 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 99888313 is about 9994.4140898804. The cubic root of 99888313 is about 463.9860172783.

The spelling of 99888313 in words is "ninety-nine million, eight hundred eighty-eight thousand, three hundred thirteen".