74909347 has 2 divisors, whose sum is σ = 74909348. Its totient is φ = 74909346.

The previous prime is 74909323. The next prime is 74909357. The reversal of 74909347 is 74390947.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74909347 - 2¹¹ = 74907299 is a prime.

It is a super-2 number, since 2×74909347² = 11222820535932818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74909357) 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, 37454673 + 37454674.

It is an arithmetic number, because the mean of its divisors is an integer number (37454674).

Almost surely, 2^74909347 is an apocalyptic number.

74909347 is a deficient number, since it is larger than the sum of its proper divisors (1).

74909347 is an equidigital number, since it uses as much as digits as its factorization.

74909347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 74909347 is about 8655.0186019442. The cubic root of 74909347 is about 421.5463537000.

Subtracting from 74909347 its reverse (74390947), we obtain a square (518400 = 720²).

The spelling of 74909347 in words is "seventy-four million, nine hundred nine thousand, three hundred forty-seven".