74344729 has 4 divisors (see below), whose sum is σ = 76354084. Its totient is φ = 72335376.

The previous prime is 74344693. The next prime is 74344759. The reversal of 74344729 is 92744347.

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 31416025 + 42928704 = 5605^2 + 6552^2 .

It is a cyclic number.

It is not a de Polignac number, because 74344729 - 2⁹ = 74344217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74344691 and 74344700.

It is not an unprimeable number, because it can be changed into a prime (74344759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004622 + ... + 1004695.

It is an arithmetic number, because the mean of its divisors is an integer number (19088521).

Almost surely, 2^74344729 is an apocalyptic number.

It is an amenable number.

74344729 is a deficient number, since it is larger than the sum of its proper divisors (2009355).

74344729 is a wasteful number, since it uses less digits than its factorization.

74344729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009354.

The product of its digits is 169344, while the sum is 40.

The square root of 74344729 is about 8622.3389518158. The cubic root of 74344729 is about 420.4845673305.

The spelling of 74344729 in words is "seventy-four million, three hundred forty-four thousand, seven hundred twenty-nine".