747439 has 16 divisors (see below), whose sum is σ = 988416. Its totient is φ = 547200.

The previous prime is 747427. The next prime is 747449. The reversal of 747439 is 934747.

It is a cyclic number.

It is not a de Polignac number, because 747439 - 2⁵ = 747407 is a prime.

747439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1024 + ... + 1594.

It is an arithmetic number, because the mean of its divisors is an integer number (61776).

2⁷⁴⁷⁴³⁹ is an apocalyptic number.

747439 is a deficient number, since it is larger than the sum of its proper divisors (240977).

747439 is a wasteful number, since it uses less digits than its factorization.

747439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606.

The product of its digits is 21168, while the sum is 34.

The square root of 747439 is about 864.5455453589. The cubic root of 747439 is about 90.7524973573.

The spelling of 747439 in words is "seven hundred forty-seven thousand, four hundred thirty-nine".