74399305 has 4 divisors (see below), whose sum is σ = 89279172. Its totient is φ = 59519440.

The previous prime is 74399257. The next prime is 74399309. The reversal of 74399305 is 50399347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50399347 = 997 ⋅50551.

It can be written as a sum of positive squares in 2 ways, for example, as 9709456 + 64689849 = 3116^2 + 8043^2 .

It is not a de Polignac number, because 74399305 - 2¹³ = 74391113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74399309) 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, 7439926 + ... + 7439935.

It is an arithmetic number, because the mean of its divisors is an integer number (22319793).

Almost surely, 2^74399305 is an apocalyptic number.

It is an amenable number.

74399305 is a deficient number, since it is larger than the sum of its proper divisors (14879867).

74399305 is a wasteful number, since it uses less digits than its factorization.

74399305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14879866.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 74399305 is about 8625.5031737285. The cubic root of 74399305 is about 420.5874338593.

The spelling of 74399305 in words is "seventy-four million, three hundred ninety-nine thousand, three hundred five".