86955619 has 2 divisors, whose sum is σ = 86955620. Its totient is φ = 86955618.

The previous prime is 86955613. The next prime is 86955641. The reversal of 86955619 is 91655968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86955619 - 2³ = 86955611 is a prime.

It is a super-2 number, since 2×86955619² = 15122559351346322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86955611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43477809 + 43477810.

It is an arithmetic number, because the mean of its divisors is an integer number (43477810).

Almost surely, 2^86955619 is an apocalyptic number.

86955619 is a deficient number, since it is larger than the sum of its proper divisors (1).

86955619 is an equidigital number, since it uses as much as digits as its factorization.

86955619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 49.

The square root of 86955619 is about 9324.9996782842. Note that the first 3 decimals coincide. The cubic root of 86955619 is about 443.0294028692.

The spelling of 86955619 in words is "eighty-six million, nine hundred fifty-five thousand, six hundred nineteen".