74543349 has 4 divisors (see below), whose sum is σ = 99391136. Its totient is φ = 49695564.

The previous prime is 74543347. The next prime is 74543401. The reversal of 74543349 is 94334547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 74543349 - 2¹ = 74543347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74543341) 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, 12423889 + ... + 12423894.

It is an arithmetic number, because the mean of its divisors is an integer number (24847784).

Almost surely, 2^74543349 is an apocalyptic number.

It is an amenable number.

74543349 is a deficient number, since it is larger than the sum of its proper divisors (24847787).

74543349 is a wasteful number, since it uses less digits than its factorization.

74543349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24847786.

The product of its digits is 181440, while the sum is 39.

The square root of 74543349 is about 8633.8490257822. The cubic root of 74543349 is about 420.8586910534.

The spelling of 74543349 in words is "seventy-four million, five hundred forty-three thousand, three hundred forty-nine".