139714861 has 16 divisors (see below), whose sum is σ = 169440768. Its totient is φ = 113457600.

The previous prime is 139714853. The next prime is 139714867. The reversal of 139714861 is 168417931.

It is a cyclic number.

It is not a de Polignac number, because 139714861 - 2³ = 139714853 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 (139714867) 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, 11326 + ... + 20191.

It is an arithmetic number, because the mean of its divisors is an integer number (10590048).

Almost surely, 2^139714861 is an apocalyptic number.

139714861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139714861 is a deficient number, since it is larger than the sum of its proper divisors (29725907).

139714861 is a wasteful number, since it uses less digits than its factorization.

139714861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31572.

The product of its digits is 36288, while the sum is 40.

The square root of 139714861 is about 11820.1041027565. The cubic root of 139714861 is about 518.8966509266.

The spelling of 139714861 in words is "one hundred thirty-nine million, seven hundred fourteen thousand, eight hundred sixty-one".