90948491 has 2 divisors, whose sum is σ = 90948492. Its totient is φ = 90948490.

The previous prime is 90948469. The next prime is 90948511. The reversal of 90948491 is 19484909.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90948491 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90948791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45474245 + 45474246.

It is an arithmetic number, because the mean of its divisors is an integer number (45474246).

Almost surely, 2^90948491 is an apocalyptic number.

90948491 is a deficient number, since it is larger than the sum of its proper divisors (1).

90948491 is an equidigital number, since it uses as much as digits as its factorization.

90948491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 90948491 is about 9536.6918268339. The cubic root of 90948491 is about 449.7092624054.

The spelling of 90948491 in words is "ninety million, nine hundred forty-eight thousand, four hundred ninety-one".