74789747 has 2 divisors, whose sum is σ = 74789748. Its totient is φ = 74789746.

The previous prime is 74789713. The next prime is 74789773. The reversal of 74789747 is 74798747.

It is a strong prime.

It is an emirp because it is prime and its reverse (74798747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74789747 - 2¹⁶ = 74724211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74789707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37394873 + 37394874.

It is an arithmetic number, because the mean of its divisors is an integer number (37394874).

Almost surely, 2^74789747 is an apocalyptic number.

74789747 is a deficient number, since it is larger than the sum of its proper divisors (1).

74789747 is an equidigital number, since it uses as much as digits as its factorization.

74789747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2765952, while the sum is 53.

The square root of 74789747 is about 8648.1065557728. The cubic root of 74789747 is about 421.3218877217.

The spelling of 74789747 in words is "seventy-four million, seven hundred eighty-nine thousand, seven hundred forty-seven".