90855949 has 2 divisors, whose sum is σ = 90855950. Its totient is φ = 90855948.

The previous prime is 90855943. The next prime is 90855977. The reversal of 90855949 is 94955809.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47361924 + 43494025 = 6882^2 + 6595^2 .

It is a cyclic number.

It is not a de Polignac number, because 90855949 - 2⁹ = 90855437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90855943) 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, 45427974 + 45427975.

It is an arithmetic number, because the mean of its divisors is an integer number (45427975).

Almost surely, 2^90855949 is an apocalyptic number.

It is an amenable number.

90855949 is a deficient number, since it is larger than the sum of its proper divisors (1).

90855949 is an equidigital number, since it uses as much as digits as its factorization.

90855949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 49.

The square root of 90855949 is about 9531.8386998522. The cubic root of 90855949 is about 449.5566811019.

The spelling of 90855949 in words is "ninety million, eight hundred fifty-five thousand, nine hundred forty-nine".