611290139 has 4 divisors (see below), whose sum is σ = 611495640. Its totient is φ = 611084640.

The previous prime is 611290133. The next prime is 611290151. The reversal of 611290139 is 931092116.

611290139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 611290139 - 2²⁸ = 342854683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611290133) 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, 98222 + ... + 104259.

It is an arithmetic number, because the mean of its divisors is an integer number (152873910).

Almost surely, 2^611290139 is an apocalyptic number.

611290139 is a deficient number, since it is larger than the sum of its proper divisors (205501).

611290139 is a wasteful number, since it uses less digits than its factorization.

611290139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205500.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 611290139 is about 24724.2823758345. The cubic root of 611290139 is about 848.6900880188.

The spelling of 611290139 in words is "six hundred eleven million, two hundred ninety thousand, one hundred thirty-nine".