139374349 has 4 divisors (see below), whose sum is σ = 141337440. Its totient is φ = 137411260.

The previous prime is 139374341. The next prime is 139374379. The reversal of 139374349 is 943473931.

139374349 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.

It is a cyclic number.

It is not a de Polignac number, because 139374349 - 2³ = 139374341 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 (139374341) 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, 981439 + ... + 981580.

It is an arithmetic number, because the mean of its divisors is an integer number (35334360).

Almost surely, 2^139374349 is an apocalyptic number.

It is an amenable number.

139374349 is a deficient number, since it is larger than the sum of its proper divisors (1963091).

139374349 is an equidigital number, since it uses as much as digits as its factorization.

139374349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963090.

The product of its digits is 244944, while the sum is 43.

The square root of 139374349 is about 11805.6913817023. The cubic root of 139374349 is about 518.4747576679.

The spelling of 139374349 in words is "one hundred thirty-nine million, three hundred seventy-four thousand, three hundred forty-nine".