139871677 has 4 divisors (see below), whose sum is σ = 152587296. Its totient is φ = 127156060.

The previous prime is 139871653. The next prime is 139871701. The reversal of 139871677 is 776178931.

139871677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776178931 = 11 ⋅70561721.

It is an interprime number because it is at equal distance from previous prime (139871653) and next prime (139871701).

It is a cyclic number.

It is not a de Polignac number, because 139871677 - 2¹¹ = 139869629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139871677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139871077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6357793 + ... + 6357814.

It is an arithmetic number, because the mean of its divisors is an integer number (38146824).

Almost surely, 2^139871677 is an apocalyptic number.

It is an amenable number.

139871677 is a deficient number, since it is larger than the sum of its proper divisors (12715619).

139871677 is a wasteful number, since it uses less digits than its factorization.

139871677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12715618.

The product of its digits is 444528, while the sum is 49.

The square root of 139871677 is about 11826.7356865705. The cubic root of 139871677 is about 519.0907149221.

The spelling of 139871677 in words is "one hundred thirty-nine million, eight hundred seventy-one thousand, six hundred seventy-seven".