139672651 has 4 divisors (see below), whose sum is σ = 139702600. Its totient is φ = 139642704.

The previous prime is 139672627. The next prime is 139672657. The reversal of 139672651 is 156276931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156276931 = 79 ⋅1978189.

It is a cyclic number.

It is not a de Polignac number, because 139672651 - 2⁵ = 139672619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139672657) 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 3 ways as a sum of consecutive naturals, for example, 6306 + ... + 17863.

It is an arithmetic number, because the mean of its divisors is an integer number (34925650).

Almost surely, 2^139672651 is an apocalyptic number.

139672651 is a deficient number, since it is larger than the sum of its proper divisors (29949).

139672651 is an equidigital number, since it uses as much as digits as its factorization.

139672651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29948.

The product of its digits is 68040, while the sum is 40.

The square root of 139672651 is about 11818.3184506088. The cubic root of 139672651 is about 518.8443901207.

It can be divided in two parts, 1396 and 72651, that added together give a palindrome (74047).

The spelling of 139672651 in words is "one hundred thirty-nine million, six hundred seventy-two thousand, six hundred fifty-one".