490688929 has 2 divisors, whose sum is σ = 490688930. Its totient is φ = 490688928.

The previous prime is 490688921. The next prime is 490688963. The reversal of 490688929 is 929886094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 464187025 + 26501904 = 21545^2 + 5148^2 .

It is a cyclic number.

It is not a de Polignac number, because 490688929 - 2³ = 490688921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 490688929.

It is not a weakly prime, because it can be changed into another prime (490688921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245344464 + 245344465.

It is an arithmetic number, because the mean of its divisors is an integer number (245344465).

Almost surely, 2^490688929 is an apocalyptic number.

It is an amenable number.

490688929 is a deficient number, since it is larger than the sum of its proper divisors (1).

490688929 is an equidigital number, since it uses as much as digits as its factorization.

490688929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The square root of 490688929 is about 22151.4994752048. The cubic root of 490688929 is about 788.7428217747.

The spelling of 490688929 in words is "four hundred ninety million, six hundred eighty-eight thousand, nine hundred twenty-nine".