86890457 has 2 divisors, whose sum is σ = 86890458. Its totient is φ = 86890456.

The previous prime is 86890423. The next prime is 86890471. The reversal of 86890457 is 75409868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86564416 + 326041 = 9304^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 86890457 - 2¹⁰ = 86889433 is a prime.

It is not a weakly prime, because it can be changed into another prime (86850457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43445228 + 43445229.

It is an arithmetic number, because the mean of its divisors is an integer number (43445229).

Almost surely, 2^86890457 is an apocalyptic number.

It is an amenable number.

86890457 is a deficient number, since it is larger than the sum of its proper divisors (1).

86890457 is an equidigital number, since it uses as much as digits as its factorization.

86890457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 86890457 is about 9321.5050823351. The cubic root of 86890457 is about 442.9187107851.

The spelling of 86890457 in words is "eighty-six million, eight hundred ninety thousand, four hundred fifty-seven".