90834857 has 2 divisors, whose sum is σ = 90834858. Its totient is φ = 90834856.

The previous prime is 90834841. The next prime is 90834869. The reversal of 90834857 is 75843809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78925456 + 11909401 = 8884^2 + 3451^2 .

It is a cyclic number.

It is not a de Polignac number, because 90834857 - 2⁴ = 90834841 is a prime.

It is not a weakly prime, because it can be changed into another prime (90834827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45417428 + 45417429.

It is an arithmetic number, because the mean of its divisors is an integer number (45417429).

Almost surely, 2^90834857 is an apocalyptic number.

It is an amenable number.

90834857 is a deficient number, since it is larger than the sum of its proper divisors (1).

90834857 is an equidigital number, since it uses as much as digits as its factorization.

90834857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 90834857 is about 9530.7322383960. The cubic root of 90834857 is about 449.5218905591.

The spelling of 90834857 in words is "ninety million, eight hundred thirty-four thousand, eight hundred fifty-seven".