490002981 has 16 divisors (see below), whose sum is σ = 704109504. Its totient is φ = 301319424.

The previous prime is 490002977. The next prime is 490002991. The reversal of 490002981 is 189200094.

It is not a de Polignac number, because 490002981 - 2² = 490002977 is a prime.

It is a super-2 number, since 2×490002981² = 480205842777772722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490002901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61245 + ... + 68781.

It is an arithmetic number, because the mean of its divisors is an integer number (44006844).

Almost surely, 2^490002981 is an apocalyptic number.

It is an amenable number.

490002981 is a deficient number, since it is larger than the sum of its proper divisors (214106523).

490002981 is a wasteful number, since it uses less digits than its factorization.

490002981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9220.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 490002981 is about 22136.0109550027. The cubic root of 490002981 is about 788.3751150430.

The spelling of 490002981 in words is "four hundred ninety million, two thousand, nine hundred eighty-one".