139191367 has 4 divisors (see below), whose sum is σ = 159075856. Its totient is φ = 119306880.

The previous prime is 139191343. The next prime is 139191379. The reversal of 139191367 is 763191931.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-139191367 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 (139191067) 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, 9942234 + ... + 9942247.

It is an arithmetic number, because the mean of its divisors is an integer number (39768964).

Almost surely, 2^139191367 is an apocalyptic number.

139191367 is a deficient number, since it is larger than the sum of its proper divisors (19884489).

139191367 is an equidigital number, since it uses as much as digits as its factorization.

139191367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19884488.

The product of its digits is 30618, while the sum is 40.

The square root of 139191367 is about 11797.9390996903. The cubic root of 139191367 is about 518.2477596646.

The spelling of 139191367 in words is "one hundred thirty-nine million, one hundred ninety-one thousand, three hundred sixty-seven".