86955971 has 2 divisors, whose sum is σ = 86955972. Its totient is φ = 86955970.

The previous prime is 86955959. The next prime is 86955983. The reversal of 86955971 is 17955968.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (86955959) and next prime (86955983).

It is a cyclic number.

It is not a de Polignac number, because 86955971 - 2²² = 82761667 is a prime.

It is a super-2 number, since 2×86955971² = 15122681785105682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86955991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43477985 + 43477986.

It is an arithmetic number, because the mean of its divisors is an integer number (43477986).

Almost surely, 2^86955971 is an apocalyptic number.

86955971 is a deficient number, since it is larger than the sum of its proper divisors (1).

86955971 is an equidigital number, since it uses as much as digits as its factorization.

86955971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 50.

The square root of 86955971 is about 9325.0185522604. The cubic root of 86955971 is about 443.0300006689.

The spelling of 86955971 in words is "eighty-six million, nine hundred fifty-five thousand, nine hundred seventy-one".