74493739 has 2 divisors, whose sum is σ = 74493740. Its totient is φ = 74493738.

The previous prime is 74493733. The next prime is 74493743. The reversal of 74493739 is 93739447.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (93739447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74493739 - 2⁵ = 74493707 is a prime.

It is not a weakly prime, because it can be changed into another prime (74493733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37246869 + 37246870.

It is an arithmetic number, because the mean of its divisors is an integer number (37246870).

Almost surely, 2^74493739 is an apocalyptic number.

74493739 is a deficient number, since it is larger than the sum of its proper divisors (1).

74493739 is an equidigital number, since it uses as much as digits as its factorization.

74493739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 46.

The square root of 74493739 is about 8630.9755532037. The cubic root of 74493739 is about 420.7653072107.

The spelling of 74493739 in words is "seventy-four million, four hundred ninety-three thousand, seven hundred thirty-nine".