139045787 has 16 divisors (see below), whose sum is σ = 149022720. Its totient is φ = 129430752.

The previous prime is 139045769. The next prime is 139045793. The reversal of 139045787 is 787540931.

139045787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139045787 - 2⁶ = 139045723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139045727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316514 + ... + 316952.

It is an arithmetic number, because the mean of its divisors is an integer number (9313920).

Almost surely, 2^139045787 is an apocalyptic number.

139045787 is a deficient number, since it is larger than the sum of its proper divisors (9976933).

139045787 is a wasteful number, since it uses less digits than its factorization.

139045787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 139045787 is about 11791.7677639954. The cubic root of 139045787 is about 518.0670185049.

It can be divided in two parts, 13904 and 5787, that added together give a palindrome (19691).

The spelling of 139045787 in words is "one hundred thirty-nine million, forty-five thousand, seven hundred eighty-seven".