90839953 has 2 divisors, whose sum is σ = 90839954. Its totient is φ = 90839952.

The previous prime is 90839941. The next prime is 90840017. The reversal of 90839953 is 35993809.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78287104 + 12552849 = 8848^2 + 3543^2 .

It is a cyclic number.

It is not a de Polignac number, because 90839953 - 2¹⁷ = 90708881 is a prime.

It is a super-2 number, since 2×90839953² = 16503794122084418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90839453) 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, 45419976 + 45419977.

It is an arithmetic number, because the mean of its divisors is an integer number (45419977).

Almost surely, 2^90839953 is an apocalyptic number.

It is an amenable number.

90839953 is a deficient number, since it is larger than the sum of its proper divisors (1).

90839953 is an equidigital number, since it uses as much as digits as its factorization.

90839953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 90839953 is about 9530.9995803169. Note that the first 3 decimals coincide. The cubic root of 90839953 is about 449.5302967326.

The spelling of 90839953 in words is "ninety million, eight hundred thirty-nine thousand, nine hundred fifty-three".