744139 has 8 divisors (see below), whose sum is σ = 825840. Its totient is φ = 664800.

The previous prime is 744137. The next prime is 744179. The reversal of 744139 is 931447.

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 744139 - 2¹ = 744137 is a prime.

It is a super-4 number, since 4×744139⁴ (a number of 25 digits) contains 4444 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (744137) 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, 117 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (103230).

2⁷⁴⁴¹³⁹ is an apocalyptic number.

744139 is a deficient number, since it is larger than the sum of its proper divisors (81701).

744139 is a wasteful number, since it uses less digits than its factorization.

744139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181.

The product of its digits is 3024, while the sum is 28.

The square root of 744139 is about 862.6349169840. The cubic root of 744139 is about 90.6187405903.

The spelling of 744139 in words is "seven hundred forty-four thousand, one hundred thirty-nine".