74028439 has 8 divisors (see below), whose sum is σ = 75552912. Its totient is φ = 72508800.

The previous prime is 74028419. The next prime is 74028473. The reversal of 74028439 is 93482047.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74028439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74028398 and 74028407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74028419) 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, 61039 + ... + 62239.

It is an arithmetic number, because the mean of its divisors is an integer number (9444114).

Almost surely, 2^74028439 is an apocalyptic number.

74028439 is a deficient number, since it is larger than the sum of its proper divisors (1524473).

74028439 is a wasteful number, since it uses less digits than its factorization.

74028439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 74028439 is about 8603.9780915574. The cubic root of 74028439 is about 419.8874206955.

The spelling of 74028439 in words is "seventy-four million, twenty-eight thousand, four hundred thirty-nine".