13878099 has 12 divisors (see below), whose sum is σ = 20137416. Its totient is φ = 9209952.

The previous prime is 13878091. The next prime is 13878101. The reversal of 13878099 is 99087831.

It is not a de Polignac number, because 13878099 - 2³ = 13878091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13878091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1354 + ... + 5439.

It is an arithmetic number, because the mean of its divisors is an integer number (1678118).

Almost surely, 2^13878099 is an apocalyptic number.

13878099 is a deficient number, since it is larger than the sum of its proper divisors (6259317).

13878099 is a wasteful number, since it uses less digits than its factorization.

13878099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026 (or 7023 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 13878099 is about 3725.3320657359. The cubic root of 13878099 is about 240.3126654079.

The spelling of 13878099 in words is "thirteen million, eight hundred seventy-eight thousand, ninety-nine".