86976139 has 2 divisors, whose sum is σ = 86976140. Its totient is φ = 86976138.

The previous prime is 86976103. The next prime is 86976157. The reversal of 86976139 is 93167968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86976139 - 2²¹ = 84878987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86976092 and 86976101.

It is not a weakly prime, because it can be changed into another prime (86971139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43488069 + 43488070.

It is an arithmetic number, because the mean of its divisors is an integer number (43488070).

Almost surely, 2^86976139 is an apocalyptic number.

86976139 is a deficient number, since it is larger than the sum of its proper divisors (1).

86976139 is an equidigital number, since it uses as much as digits as its factorization.

86976139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 49.

The square root of 86976139 is about 9326.0998815153. The cubic root of 86976139 is about 443.0642491829.

The spelling of 86976139 in words is "eighty-six million, nine hundred seventy-six thousand, one hundred thirty-nine".