99988415 has 4 divisors (see below), whose sum is σ = 119986104. Its totient is φ = 79990728.

The previous prime is 99988409. The next prime is 99988453. The reversal of 99988415 is 51488999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51488999 = 367 ⋅140297.

It is a cyclic number.

It is not a de Polignac number, because 99988415 - 2¹² = 99984319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9998837 + ... + 9998846.

It is an arithmetic number, because the mean of its divisors is an integer number (29996526).

Almost surely, 2^99988415 is an apocalyptic number.

99988415 is a deficient number, since it is larger than the sum of its proper divisors (19997689).

99988415 is a wasteful number, since it uses less digits than its factorization.

99988415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19997688.

The product of its digits is 933120, while the sum is 53.

The square root of 99988415 is about 9999.4207332225. The cubic root of 99988415 is about 464.1409584002.

The spelling of 99988415 in words is "ninety-nine million, nine hundred eighty-eight thousand, four hundred fifteen".