74072249 has 2 divisors, whose sum is σ = 74072250. Its totient is φ = 74072248.

The previous prime is 74072233. The next prime is 74072267. The reversal of 74072249 is 94227047.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63313849 + 10758400 = 7957^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 74072249 - 2⁴ = 74072233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74072549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37036124 + 37036125.

It is an arithmetic number, because the mean of its divisors is an integer number (37036125).

Almost surely, 2^74072249 is an apocalyptic number.

It is an amenable number.

74072249 is a deficient number, since it is larger than the sum of its proper divisors (1).

74072249 is an equidigital number, since it uses as much as digits as its factorization.

74072249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 74072249 is about 8606.5236303632. The cubic root of 74072249 is about 419.9702340961.

The spelling of 74072249 in words is "seventy-four million, seventy-two thousand, two hundred forty-nine".