890595491 has 2 divisors, whose sum is σ = 890595492. Its totient is φ = 890595490.

The previous prime is 890595463. The next prime is 890595521. The reversal of 890595491 is 194595098.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890595491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (890595451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445297745 + 445297746.

It is an arithmetic number, because the mean of its divisors is an integer number (445297746).

Almost surely, 2^890595491 is an apocalyptic number.

890595491 is a deficient number, since it is larger than the sum of its proper divisors (1).

890595491 is an equidigital number, since it uses as much as digits as its factorization.

890595491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 890595491 is about 29842.8465632888. The cubic root of 890595491 is about 962.1146566976.

The spelling of 890595491 in words is "eight hundred ninety million, five hundred ninety-five thousand, four hundred ninety-one".