74982749 has 2 divisors, whose sum is σ = 74982750. Its totient is φ = 74982748.

The previous prime is 74982709. The next prime is 74982763. The reversal of 74982749 is 94728947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73788100 + 1194649 = 8590^2 + 1093^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74982749 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74982697 and 74982706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74982709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37491374 + 37491375.

It is an arithmetic number, because the mean of its divisors is an integer number (37491375).

Almost surely, 2^74982749 is an apocalyptic number.

It is an amenable number.

74982749 is a deficient number, since it is larger than the sum of its proper divisors (1).

74982749 is an equidigital number, since it uses as much as digits as its factorization.

74982749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 74982749 is about 8659.2579936159. The cubic root of 74982749 is about 421.6839967117.

The spelling of 74982749 in words is "seventy-four million, nine hundred eighty-two thousand, seven hundred forty-nine".