490023641 has 2 divisors, whose sum is σ = 490023642. Its totient is φ = 490023640.

The previous prime is 490023631. The next prime is 490023683. The reversal of 490023641 is 146320094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448550041 + 41473600 = 21179^2 + 6440^2 .

It is a cyclic number.

It is not a de Polignac number, because 490023641 - 2⁶ = 490023577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490023631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245011820 + 245011821.

It is an arithmetic number, because the mean of its divisors is an integer number (245011821).

Almost surely, 2^490023641 is an apocalyptic number.

It is an amenable number.

490023641 is a deficient number, since it is larger than the sum of its proper divisors (1).

490023641 is an equidigital number, since it uses as much as digits as its factorization.

490023641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 490023641 is about 22136.4776104962. The cubic root of 490023641 is about 788.3861949762.

The spelling of 490023641 in words is "four hundred ninety million, twenty-three thousand, six hundred forty-one".