74977379 has 2 divisors, whose sum is σ = 74977380. Its totient is φ = 74977378.

The previous prime is 74977367. The next prime is 74977433. The reversal of 74977379 is 97377947.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74977379 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74977379.

It is not a weakly prime, because it can be changed into another prime (74977319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37488689 + 37488690.

It is an arithmetic number, because the mean of its divisors is an integer number (37488690).

Almost surely, 2^74977379 is an apocalyptic number.

74977379 is a deficient number, since it is larger than the sum of its proper divisors (1).

74977379 is an equidigital number, since it uses as much as digits as its factorization.

74977379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2333772, while the sum is 53.

The square root of 74977379 is about 8658.9479153070. The cubic root of 74977379 is about 421.6739299646.

The spelling of 74977379 in words is "seventy-four million, nine hundred seventy-seven thousand, three hundred seventy-nine".