139013787 has 16 divisors (see below), whose sum is σ = 202400640. Its totient is φ = 84168000.

The previous prime is 139013767. The next prime is 139013801. The reversal of 139013787 is 787310931.

It is a happy number.

It is not a de Polignac number, because 139013787 - 2⁶ = 139013723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139013767) 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, 58264 + ... + 60602.

It is an arithmetic number, because the mean of its divisors is an integer number (12650040).

Almost surely, 2^139013787 is an apocalyptic number.

139013787 is a deficient number, since it is larger than the sum of its proper divisors (63386853).

139013787 is a wasteful number, since it uses less digits than its factorization.

139013787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 139013787 is about 11790.4108070923. The cubic root of 139013787 is about 518.0272728047.

The spelling of 139013787 in words is "one hundred thirty-nine million, thirteen thousand, seven hundred eighty-seven".