139761671 has 12 divisors (see below), whose sum is σ = 167826240. Its totient is φ = 115930080.

The previous prime is 139761659. The next prime is 139761697. The reversal of 139761671 is 176167931.

It is a happy number.

It is not a de Polignac number, because 139761671 - 2¹⁸ = 139499527 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 (139761631) 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, 44486 + ... + 47523.

It is an arithmetic number, because the mean of its divisors is an integer number (13985520).

Almost surely, 2^139761671 is an apocalyptic number.

139761671 is a deficient number, since it is larger than the sum of its proper divisors (28064569).

139761671 is an equidigital number, since it uses as much as digits as its factorization.

139761671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92054 (or 92047 counting only the distinct ones).

The product of its digits is 47628, while the sum is 41.

The square root of 139761671 is about 11822.0840379351. The cubic root of 139761671 is about 518.9545947509.

The spelling of 139761671 in words is "one hundred thirty-nine million, seven hundred sixty-one thousand, six hundred seventy-one".