2003500139 has 4 divisors (see below), whose sum is σ = 2004442440. Its totient is φ = 2002557840.

The previous prime is 2003500127. The next prime is 2003500141. The reversal of 2003500139 is 9310053002.

It is a happy number.

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-2003500139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003500159) 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, 467954 + ... + 472215.

It is an arithmetic number, because the mean of its divisors is an integer number (501110610).

Almost surely, 2^2003500139 is an apocalyptic number.

2003500139 is a deficient number, since it is larger than the sum of its proper divisors (942301).

2003500139 is an equidigital number, since it uses as much as digits as its factorization.

2003500139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942300.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 2003500139 is about 44760.4751873793. The cubic root of 2003500139 is about 1260.6556046880.

The spelling of 2003500139 in words is "two billion, three million, five hundred thousand, one hundred thirty-nine".