139017807 has 12 divisors (see below), whose sum is σ = 201516744. Its totient is φ = 92349360.

The previous prime is 139017803. The next prime is 139017817. The reversal of 139017807 is 708710931.

139017807 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 139017807 - 2² = 139017803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139017803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24744 + ... + 29837.

It is an arithmetic number, because the mean of its divisors is an integer number (16793062).

Almost surely, 2^139017807 is an apocalyptic number.

139017807 is a deficient number, since it is larger than the sum of its proper divisors (62498937).

139017807 is a wasteful number, since it uses less digits than its factorization.

139017807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54870 (or 54867 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 139017807 is about 11790.5812833804. The cubic root of 139017807 is about 518.0322661932.

The spelling of 139017807 in words is "one hundred thirty-nine million, seventeen thousand, eight hundred seven".