1590139 has 4 divisors (see below), whose sum is σ = 1593256. Its totient is φ = 1587024.

The previous prime is 1590137. The next prime is 1590161. The reversal of 1590139 is 9310951.

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

It is a cyclic number.

It is not a de Polignac number, because 1590139 - 2¹ = 1590137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1590131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594 + ... + 1879.

It is an arithmetic number, because the mean of its divisors is an integer number (398314).

2^1590139 is an apocalyptic number.

1590139 is a deficient number, since it is larger than the sum of its proper divisors (3117).

1590139 is an equidigital number, since it uses as much as digits as its factorization.

1590139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1590139 is about 1261.0071371725. The cubic root of 1590139 is about 116.7199330461.

The spelling of 1590139 in words is "one million, five hundred ninety thousand, one hundred thirty-nine".