490129631 has 4 divisors (see below), whose sum is σ = 490698432. Its totient is φ = 489560832.

The previous prime is 490129613. The next prime is 490129687. The reversal of 490129631 is 136921094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490129631 is a prime.

It is a super-2 number, since 2×490129631² = 480454110368392322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490129591 and 490129600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490129231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283106 + ... + 284831.

It is an arithmetic number, because the mean of its divisors is an integer number (122674608).

Almost surely, 2^490129631 is an apocalyptic number.

490129631 is a deficient number, since it is larger than the sum of its proper divisors (568801).

490129631 is an equidigital number, since it uses as much as digits as its factorization.

490129631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568800.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 490129631 is about 22138.8714933711. The cubic root of 490129631 is about 788.4430323897.

The spelling of 490129631 in words is "four hundred ninety million, one hundred twenty-nine thousand, six hundred thirty-one".