86622479 has 2 divisors, whose sum is σ = 86622480. Its totient is φ = 86622478.

The previous prime is 86622451. The next prime is 86622493. The reversal of 86622479 is 97422668.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86622479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86622079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43311239 + 43311240.

It is an arithmetic number, because the mean of its divisors is an integer number (43311240).

Almost surely, 2^86622479 is an apocalyptic number.

86622479 is a deficient number, since it is larger than the sum of its proper divisors (1).

86622479 is an equidigital number, since it uses as much as digits as its factorization.

86622479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 86622479 is about 9307.1198015283. The cubic root of 86622479 is about 442.4629081446.

The spelling of 86622479 in words is "eighty-six million, six hundred twenty-two thousand, four hundred seventy-nine".