86588989 has 2 divisors, whose sum is σ = 86588990. Its totient is φ = 86588988.

The previous prime is 86588969. The next prime is 86589011. The reversal of 86588989 is 98988568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56700900 + 29888089 = 7530^2 + 5467^2 .

It is a cyclic number.

It is not a de Polignac number, because 86588989 - 2⁷ = 86588861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86588959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43294494 + 43294495.

It is an arithmetic number, because the mean of its divisors is an integer number (43294495).

Almost surely, 2^86588989 is an apocalyptic number.

It is an amenable number.

86588989 is a deficient number, since it is larger than the sum of its proper divisors (1).

86588989 is an equidigital number, since it uses as much as digits as its factorization.

86588989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9953280, while the sum is 61.

The square root of 86588989 is about 9305.3204673455. The cubic root of 86588989 is about 442.4058790954.

The spelling of 86588989 in words is "eighty-six million, five hundred eighty-eight thousand, nine hundred eighty-nine".