86627389 has 2 divisors, whose sum is σ = 86627390. Its totient is φ = 86627388.

The previous prime is 86627377. The next prime is 86627459. The reversal of 86627389 is 98372668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84548025 + 2079364 = 9195^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 86627389 - 2⁵ = 86627357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86627329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43313694 + 43313695.

It is an arithmetic number, because the mean of its divisors is an integer number (43313695).

Almost surely, 2^86627389 is an apocalyptic number.

It is an amenable number.

86627389 is a deficient number, since it is larger than the sum of its proper divisors (1).

86627389 is an equidigital number, since it uses as much as digits as its factorization.

86627389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 86627389 is about 9307.3835743457. The cubic root of 86627389 is about 442.4712679909.

The spelling of 86627389 in words is "eighty-six million, six hundred twenty-seven thousand, three hundred eighty-nine".