7955139 has 4 divisors (see below), whose sum is σ = 10606856. Its totient is φ = 5303424.

The previous prime is 7955117. The next prime is 7955159. The reversal of 7955139 is 9315597.

7955139 is digitally balanced in base 4, 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 an emirpimes, since its reverse is a distinct semiprime: 9315597 = 3 ⋅3105199.

It is not a de Polignac number, because 7955139 - 2⁷ = 7955011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7955097 and 7955106.

It is not an unprimeable number, because it can be changed into a prime (7955159) 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, 1325854 + ... + 1325859.

It is an arithmetic number, because the mean of its divisors is an integer number (2651714).

Almost surely, 2^7955139 is an apocalyptic number.

7955139 is a deficient number, since it is larger than the sum of its proper divisors (2651717).

7955139 is a wasteful number, since it uses less digits than its factorization.

7955139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651716.

The product of its digits is 42525, while the sum is 39.

The square root of 7955139 is about 2820.4855964887. The cubic root of 7955139 is about 199.6254573602.

The spelling of 7955139 in words is "seven million, nine hundred fifty-five thousand, one hundred thirty-nine".