90461491 has 2 divisors, whose sum is σ = 90461492. Its totient is φ = 90461490.

The previous prime is 90461477. The next prime is 90461509. The reversal of 90461491 is 19416409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90461491 - 2⁷ = 90461363 is a prime.

It is not a weakly prime, because it can be changed into another prime (90461401) 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, 45230745 + 45230746.

It is an arithmetic number, because the mean of its divisors is an integer number (45230746).

Almost surely, 2^90461491 is an apocalyptic number.

90461491 is a deficient number, since it is larger than the sum of its proper divisors (1).

90461491 is an equidigital number, since it uses as much as digits as its factorization.

90461491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 90461491 is about 9511.1245917610. The cubic root of 90461491 is about 448.9051424689.

The spelling of 90461491 in words is "ninety million, four hundred sixty-one thousand, four hundred ninety-one".