86989139 has 2 divisors, whose sum is σ = 86989140. Its totient is φ = 86989138.

The previous prime is 86989121. The next prime is 86989157. The reversal of 86989139 is 93198968.

It is a balanced prime because it is at equal distance from previous prime (86989121) and next prime (86989157).

It is a cyclic number.

It is not a de Polignac number, because 86989139 - 2¹² = 86985043 is a prime.

It is a super-2 number, since 2×86989139² = 15134220607922642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86989159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43494569 + 43494570.

It is an arithmetic number, because the mean of its divisors is an integer number (43494570).

Almost surely, 2^86989139 is an apocalyptic number.

86989139 is a deficient number, since it is larger than the sum of its proper divisors (1).

86989139 is an equidigital number, since it uses as much as digits as its factorization.

86989139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 53.

The square root of 86989139 is about 9326.7968242050. The cubic root of 86989139 is about 443.0863224717.

The spelling of 86989139 in words is "eighty-six million, nine hundred eighty-nine thousand, one hundred thirty-nine".