74434321 has 4 divisors (see below), whose sum is σ = 80160052. Its totient is φ = 68708592.

The previous prime is 74434309. The next prime is 74434351. The reversal of 74434321 is 12343447.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48790225 + 25644096 = 6985^2 + 5064^2 .

It is a cyclic number.

It is not a de Polignac number, because 74434321 - 2²¹ = 72337169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74434321.

It is not an unprimeable number, because it can be changed into a prime (74434351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2862846 + ... + 2862871.

It is an arithmetic number, because the mean of its divisors is an integer number (20040013).

Almost surely, 2^74434321 is an apocalyptic number.

It is an amenable number.

74434321 is a deficient number, since it is larger than the sum of its proper divisors (5725731).

74434321 is a wasteful number, since it uses less digits than its factorization.

74434321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5725730.

The product of its digits is 8064, while the sum is 28.

The square root of 74434321 is about 8627.5327295815. The cubic root of 74434321 is about 420.6534066069.

Adding to 74434321 its reverse (12343447), we get a palindrome (86777768).

The spelling of 74434321 in words is "seventy-four million, four hundred thirty-four thousand, three hundred twenty-one".