86801639 has 2 divisors, whose sum is σ = 86801640. Its totient is φ = 86801638.

The previous prime is 86801629. The next prime is 86801647. The reversal of 86801639 is 93610868.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86801639 - 2⁴ = 86801623 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86801596 and 86801605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86801629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43400819 + 43400820.

It is an arithmetic number, because the mean of its divisors is an integer number (43400820).

Almost surely, 2^86801639 is an apocalyptic number.

86801639 is a deficient number, since it is larger than the sum of its proper divisors (1).

86801639 is an equidigital number, since it uses as much as digits as its factorization.

86801639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 86801639 is about 9316.7397194512. The cubic root of 86801639 is about 442.7677445878.

The spelling of 86801639 in words is "eighty-six million, eight hundred one thousand, six hundred thirty-nine".