748139 has 4 divisors (see below), whose sum is σ = 855024. Its totient is φ = 641256.

The previous prime is 748133. The next prime is 748169. The reversal of 748139 is 931847.

748139 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931847 = 7 ⋅133121.

It is not a de Polignac number, because 748139 - 2¹² = 744043 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 748139.

It is not an unprimeable number, because it can be changed into a prime (748133) 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, 53432 + ... + 53445.

It is an arithmetic number, because the mean of its divisors is an integer number (213756).

2⁷⁴⁸¹³⁹ is an apocalyptic number.

748139 is a deficient number, since it is larger than the sum of its proper divisors (106885).

748139 is a wasteful number, since it uses less digits than its factorization.

748139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106884.

The product of its digits is 6048, while the sum is 32.

The square root of 748139 is about 864.9502875888. The cubic root of 748139 is about 90.7808193684.

The spelling of 748139 in words is "seven hundred forty-eight thousand, one hundred thirty-nine".