139937071 has 16 divisors (see below), whose sum is σ = 153592960. Its totient is φ = 127020960.

The previous prime is 139937029. The next prime is 139937117. The reversal of 139937071 is 170739931.

It is a happy number.

139937071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 139937071 - 2¹⁷ = 139805999 is a prime.

It is the 11830-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139937971) by changing a digit.

It is a nontrivial repunit in base 11829.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45616 + ... + 48586.

It is an arithmetic number, because the mean of its divisors is an integer number (9599560).

Almost surely, 2^139937071 is an apocalyptic number.

139937071 is a deficient number, since it is larger than the sum of its proper divisors (13655889).

139937071 is a wasteful number, since it uses less digits than its factorization.

139937071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094.

The product of its (nonzero) digits is 35721, while the sum is 40.

The square root of 139937071 is about 11829.5000317004. The cubic root of 139937071 is about 519.1715988918.

The spelling of 139937071 in words is "one hundred thirty-nine million, nine hundred thirty-seven thousand, seventy-one".