490129729 has 2 divisors, whose sum is σ = 490129730. Its totient is φ = 490129728.

The previous prime is 490129711. The next prime is 490129741. The reversal of 490129729 is 927921094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289850625 + 200279104 = 17025^2 + 14152^2 .

It is a cyclic number.

It is not a de Polignac number, because 490129729 - 2⁹ = 490129217 is a prime.

It is a super-2 number, since 2×490129729² = 480454302499226882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (490129789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245064864 + 245064865.

It is an arithmetic number, because the mean of its divisors is an integer number (245064865).

Almost surely, 2^490129729 is an apocalyptic number.

It is an amenable number.

490129729 is a deficient number, since it is larger than the sum of its proper divisors (1).

490129729 is an equidigital number, since it uses as much as digits as its factorization.

490129729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 490129729 is about 22138.8737066726. The cubic root of 490129729 is about 788.4430849387.

The spelling of 490129729 in words is "four hundred ninety million, one hundred twenty-nine thousand, seven hundred twenty-nine".