17490139 has 2 divisors, whose sum is σ = 17490140. Its totient is φ = 17490138.

The previous prime is 17490133. The next prime is 17490197. The reversal of 17490139 is 93109471.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17490139 - 2³ = 17490131 is a prime.

It is not a weakly prime, because it can be changed into another prime (17490131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8745069 + 8745070.

It is an arithmetic number, because the mean of its divisors is an integer number (8745070).

Almost surely, 2^17490139 is an apocalyptic number.

17490139 is a deficient number, since it is larger than the sum of its proper divisors (1).

17490139 is an equidigital number, since it uses as much as digits as its factorization.

17490139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 17490139 is about 4182.1213516587. The cubic root of 17490139 is about 259.5759309928.

The spelling of 17490139 in words is "seventeen million, four hundred ninety thousand, one hundred thirty-nine".