747139 has 2 divisors, whose sum is σ = 747140. Its totient is φ = 747138.

The previous prime is 747113. The next prime is 747157. The reversal of 747139 is 931747.

747139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (931747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 747139 - 2⁵ = 747107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 747139.

It is not a weakly prime, because it can be changed into another prime (747199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373569 + 373570.

It is an arithmetic number, because the mean of its divisors is an integer number (373570).

2⁷⁴⁷¹³⁹ is an apocalyptic number.

747139 is a deficient number, since it is larger than the sum of its proper divisors (1).

747139 is an equidigital number, since it uses as much as digits as its factorization.

747139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 31.

The square root of 747139 is about 864.3720263868. The cubic root of 747139 is about 90.7403539394.

The spelling of 747139 in words is "seven hundred forty-seven thousand, one hundred thirty-nine".