74787379 has 4 divisors (see below), whose sum is σ = 75376384. Its totient is φ = 74198376.

The previous prime is 74787367. The next prime is 74787389. The reversal of 74787379 is 97378747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97378747 = 109 ⋅893383.

It is a cyclic number.

It is not a de Polignac number, because 74787379 - 2⁵ = 74787347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74787319) 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, 294312 + ... + 294565.

It is an arithmetic number, because the mean of its divisors is an integer number (18844096).

Almost surely, 2^74787379 is an apocalyptic number.

74787379 is a deficient number, since it is larger than the sum of its proper divisors (589005).

74787379 is a wasteful number, since it uses less digits than its factorization.

74787379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589004.

The product of its digits is 2074464, while the sum is 52.

The square root of 74787379 is about 8647.9696461077. The cubic root of 74787379 is about 421.3174410304.

The spelling of 74787379 in words is "seventy-four million, seven hundred eighty-seven thousand, three hundred seventy-nine".