90741949 has 2 divisors, whose sum is σ = 90741950. Its totient is φ = 90741948.

The previous prime is 90741947. The next prime is 90741983. The reversal of 90741949 is 94914709.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61387225 + 29354724 = 7835^2 + 5418^2 .

It is a cyclic number.

It is not a de Polignac number, because 90741949 - 2¹ = 90741947 is a prime.

Together with 90741947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90741947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45370974 + 45370975.

It is an arithmetic number, because the mean of its divisors is an integer number (45370975).

Almost surely, 2^90741949 is an apocalyptic number.

It is an amenable number.

90741949 is a deficient number, since it is larger than the sum of its proper divisors (1).

90741949 is an equidigital number, since it uses as much as digits as its factorization.

90741949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 90741949 is about 9525.8568643456. The cubic root of 90741949 is about 449.3685778022.

The spelling of 90741949 in words is "ninety million, seven hundred forty-one thousand, nine hundred forty-nine".