490398137 has 2 divisors, whose sum is σ = 490398138. Its totient is φ = 490398136.

The previous prime is 490398131. The next prime is 490398143. The reversal of 490398137 is 731893094.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (490398131) and next prime (490398143).

It can be written as a sum of positive squares in only one way, i.e., 490002496 + 395641 = 22136^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 490398137 - 2⁴ = 490398121 is a prime.

It is not a weakly prime, because it can be changed into another prime (490398131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245199068 + 245199069.

It is an arithmetic number, because the mean of its divisors is an integer number (245199069).

Almost surely, 2^490398137 is an apocalyptic number.

It is an amenable number.

490398137 is a deficient number, since it is larger than the sum of its proper divisors (1).

490398137 is an equidigital number, since it uses as much as digits as its factorization.

490398137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 490398137 is about 22144.9347933111. The cubic root of 490398137 is about 788.5869827684.

The spelling of 490398137 in words is "four hundred ninety million, three hundred ninety-eight thousand, one hundred thirty-seven".