99878119 has 6 divisors (see below), whose sum is σ = 109783520. Its totient is φ = 90798180.

The previous prime is 99878113. The next prime is 99878131. The reversal of 99878119 is 91187899.

It is not a de Polignac number, because 99878119 - 2¹³ = 99869927 is a prime.

It is a super-2 number, since 2×99878119² = 19951277309956322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99878113) 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, 412599 + ... + 412840.

Almost surely, 2^99878119 is an apocalyptic number.

99878119 is a deficient number, since it is larger than the sum of its proper divisors (9905401).

99878119 is a wasteful number, since it uses less digits than its factorization.

99878119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825461 (or 825450 counting only the distinct ones).

The product of its digits is 326592, while the sum is 52.

The square root of 99878119 is about 9993.9040919953. The cubic root of 99878119 is about 463.9702328679.

The spelling of 99878119 in words is "ninety-nine million, eight hundred seventy-eight thousand, one hundred nineteen".