74994391 has 2 divisors, whose sum is σ = 74994392. Its totient is φ = 74994390.

The previous prime is 74994343. The next prime is 74994407. The reversal of 74994391 is 19349947.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74994391 - 2¹⁷ = 74863319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74994341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37497195 + 37497196.

It is an arithmetic number, because the mean of its divisors is an integer number (37497196).

Almost surely, 2^74994391 is an apocalyptic number.

74994391 is a deficient number, since it is larger than the sum of its proper divisors (1).

74994391 is an equidigital number, since it uses as much as digits as its factorization.

74994391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 74994391 is about 8659.9301960235. The cubic root of 74994391 is about 421.7058194692.

The spelling of 74994391 in words is "seventy-four million, nine hundred ninety-four thousand, three hundred ninety-one".