99988722 has 16 divisors (see below), whose sum is σ = 222197280. Its totient is φ = 33329556.

The previous prime is 99988649. The next prime is 99988753. The reversal of 99988722 is 22788999.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1851643 = 99988722 / (9 + 9 + 9 + 8 + 8 + 7 + 2 + 2).

It is a nialpdrome in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 925768 + ... + 925875.

It is an arithmetic number, because the mean of its divisors is an integer number (13887330).

Almost surely, 2^99988722 is an apocalyptic number.

99988722 is an abundant number, since it is smaller than the sum of its proper divisors (122208558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99988722 is a wasteful number, since it uses less digits than its factorization.

99988722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851654 (or 1851648 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 99988722 is about 9999.4360840999. The cubic root of 99988722 is about 464.1414334256.

The spelling of 99988722 in words is "ninety-nine million, nine hundred eighty-eight thousand, seven hundred twenty-two".