74334431 has 4 divisors (see below), whose sum is σ = 74826864. Its totient is φ = 73842000.

The previous prime is 74334427. The next prime is 74334457. The reversal of 74334431 is 13443347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13443347 = 1979 ⋅6793.

It is a cyclic number.

It is not a de Polignac number, because 74334431 - 2² = 74334427 is a prime.

It is a super-2 number, since 2×74334431² = 11051215264187522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74334394 and 74334403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74334131) 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, 245990 + ... + 246291.

It is an arithmetic number, because the mean of its divisors is an integer number (18706716).

Almost surely, 2^74334431 is an apocalyptic number.

74334431 is a deficient number, since it is larger than the sum of its proper divisors (492433).

74334431 is a wasteful number, since it uses less digits than its factorization.

74334431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492432.

The product of its digits is 12096, while the sum is 29.

The square root of 74334431 is about 8621.7417613844. The cubic root of 74334431 is about 420.4651516970.

Adding to 74334431 its reverse (13443347), we get a palindrome (87777778).

The spelling of 74334431 in words is "seventy-four million, three hundred thirty-four thousand, four hundred thirty-one".