490202891 has 2 divisors, whose sum is σ = 490202892. Its totient is φ = 490202890.

The previous prime is 490202879. The next prime is 490202963. The reversal of 490202891 is 198202094.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490202891 is a prime.

It is not a weakly prime, because it can be changed into another prime (490202291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245101445 + 245101446.

It is an arithmetic number, because the mean of its divisors is an integer number (245101446).

Almost surely, 2^490202891 is an apocalyptic number.

490202891 is a deficient number, since it is larger than the sum of its proper divisors (1).

490202891 is an equidigital number, since it uses as much as digits as its factorization.

490202891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 490202891 is about 22140.5259874286. The cubic root of 490202891 is about 788.4823134664.

The spelling of 490202891 in words is "four hundred ninety million, two hundred two thousand, eight hundred ninety-one".