7139386439 has 8 divisors (see below), whose sum is σ = 7560147840. Its totient is φ = 6723125496.

The previous prime is 7139386427. The next prime is 7139386447. The reversal of 7139386439 is 9346839317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7139386439 - 2³² = 2844419143 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 (7139386939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121849 + ... + 1128194.

It is an arithmetic number, because the mean of its divisors is an integer number (945018480).

Almost surely, 2^7139386439 is an apocalyptic number.

7139386439 is a deficient number, since it is larger than the sum of its proper divisors (420761401).

7139386439 is a wasteful number, since it uses less digits than its factorization.

7139386439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250229.

The product of its digits is 2939328, while the sum is 53.

The square root of 7139386439 is about 84494.8900170892. The cubic root of 7139386439 is about 1925.5448113527.

The spelling of 7139386439 in words is "seven billion, one hundred thirty-nine million, three hundred eighty-six thousand, four hundred thirty-nine".