74426439 has 16 divisors (see below), whose sum is σ = 107009280. Its totient is φ = 45858240.

The previous prime is 74426437. The next prime is 74426447. The reversal of 74426439 is 93462447.

It is not a de Polignac number, because 74426439 - 2¹ = 74426437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74426397 and 74426406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74426431) 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, 13587 + ... + 18260.

It is an arithmetic number, because the mean of its divisors is an integer number (6688080).

Almost surely, 2^74426439 is an apocalyptic number.

74426439 is a deficient number, since it is larger than the sum of its proper divisors (32582841).

74426439 is a wasteful number, since it uses less digits than its factorization.

74426439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31910.

The product of its digits is 145152, while the sum is 39.

The square root of 74426439 is about 8627.0759240892. The cubic root of 74426439 is about 420.6385581376.

The spelling of 74426439 in words is "seventy-four million, four hundred twenty-six thousand, four hundred thirty-nine".