7390139 has 8 divisors (see below), whose sum is σ = 7629888. Its totient is φ = 7153920.

The previous prime is 7390129. The next prime is 7390151. The reversal of 7390139 is 9310937.

It is a happy number.

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 7390139 - 2²⁰ = 6341563 is a prime.

It is a super-2 number, since 2×7390139² = 109228308878642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7390129) 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 7 ways as a sum of consecutive naturals, for example, 3749 + ... + 5369.

It is an arithmetic number, because the mean of its divisors is an integer number (953736).

Almost surely, 2^7390139 is an apocalyptic number.

7390139 is a deficient number, since it is larger than the sum of its proper divisors (239749).

7390139 is a wasteful number, since it uses less digits than its factorization.

7390139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 7390139 is about 2718.4810096817. The cubic root of 7390139 is about 194.7829186281.

The spelling of 7390139 in words is "seven million, three hundred ninety thousand, one hundred thirty-nine".