15139789 has 16 divisors (see below), whose sum is σ = 18496000. Its totient is φ = 12103344.

The previous prime is 15139777. The next prime is 15139823. The reversal of 15139789 is 98793151.

It is a cyclic number.

It is not a de Polignac number, because 15139789 - 2⁵ = 15139757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15139759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8062 + ... + 9760.

It is an arithmetic number, because the mean of its divisors is an integer number (1156000).

Almost surely, 2^15139789 is an apocalyptic number.

15139789 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

15139789 is a deficient number, since it is larger than the sum of its proper divisors (3356211).

15139789 is a wasteful number, since it uses less digits than its factorization.

15139789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792.

The product of its digits is 68040, while the sum is 43.

The square root of 15139789 is about 3890.9881778284. The cubic root of 15139789 is about 247.3849494178.

The spelling of 15139789 in words is "fifteen million, one hundred thirty-nine thousand, seven hundred eighty-nine".