74440427 has 4 divisors (see below), whose sum is σ = 74541360. Its totient is φ = 74339496.

The previous prime is 74440409. The next prime is 74440441. The reversal of 74440427 is 72404447.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74440427 - 2¹⁰ = 74439403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74440393 and 74440402.

It is not an unprimeable number, because it can be changed into a prime (74400427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49352 + ... + 50837.

It is an arithmetic number, because the mean of its divisors is an integer number (18635340).

Almost surely, 2^74440427 is an apocalyptic number.

74440427 is a deficient number, since it is larger than the sum of its proper divisors (100933).

74440427 is a wasteful number, since it uses less digits than its factorization.

74440427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100932.

The product of its (nonzero) digits is 25088, while the sum is 32.

The square root of 74440427 is about 8627.8865894262. The cubic root of 74440427 is about 420.6649086463.

The spelling of 74440427 in words is "seventy-four million, four hundred forty thousand, four hundred twenty-seven".