139791367 has 4 divisors (see below), whose sum is σ = 140407416. Its totient is φ = 139175320.

The previous prime is 139791349. The next prime is 139791371. The reversal of 139791367 is 763197931.

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

It is a cyclic number.

It is not a de Polignac number, because 139791367 - 2²³ = 131402759 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 (139791347) 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, 307684 + ... + 308137.

It is an arithmetic number, because the mean of its divisors is an integer number (35101854).

Almost surely, 2^139791367 is an apocalyptic number.

139791367 is a deficient number, since it is larger than the sum of its proper divisors (616049).

139791367 is an equidigital number, since it uses as much as digits as its factorization.

139791367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616048.

The product of its digits is 214326, while the sum is 46.

The square root of 139791367 is about 11823.3399257570. The cubic root of 139791367 is about 518.9913472792.

The spelling of 139791367 in words is "one hundred thirty-nine million, seven hundred ninety-one thousand, three hundred sixty-seven".