13878097 has 4 divisors (see below), whose sum is σ = 13887216. Its totient is φ = 13868980.

The previous prime is 13878091. The next prime is 13878101. The reversal of 13878097 is 79087831.

13878097 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79087831 = 823 ⋅96097.

It is a cyclic number.

It is not a de Polignac number, because 13878097 - 2³ = 13878089 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1663 + ... + 5524.

It is an arithmetic number, because the mean of its divisors is an integer number (3471804).

Almost surely, 2^13878097 is an apocalyptic number.

It is an amenable number.

13878097 is a deficient number, since it is larger than the sum of its proper divisors (9119).

13878097 is an equidigital number, since it uses as much as digits as its factorization.

13878097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 13878097 is about 3725.3317973034. The cubic root of 13878097 is about 240.3126538639.

The spelling of 13878097 in words is "thirteen million, eight hundred seventy-eight thousand, ninety-seven".