74744491 has 2 divisors, whose sum is σ = 74744492. Its totient is φ = 74744490.

The previous prime is 74744473. The next prime is 74744497. The reversal of 74744491 is 19444747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74744491 - 2¹⁵ = 74711723 is a prime.

It is not a weakly prime, because it can be changed into another prime (74744497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37372245 + 37372246.

It is an arithmetic number, because the mean of its divisors is an integer number (37372246).

Almost surely, 2^74744491 is an apocalyptic number.

74744491 is a deficient number, since it is larger than the sum of its proper divisors (1).

74744491 is an equidigital number, since it uses as much as digits as its factorization.

74744491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The square root of 74744491 is about 8645.4896333290. The cubic root of 74744491 is about 421.2368885904.

The spelling of 74744491 in words is "seventy-four million, seven hundred forty-four thousand, four hundred ninety-one".