74091097 has 2 divisors, whose sum is σ = 74091098. Its totient is φ = 74091096.

The previous prime is 74091077. The next prime is 74091133. The reversal of 74091097 is 79019047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44235801 + 29855296 = 6651^2 + 5464^2 .

It is an emirp because it is prime and its reverse (79019047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74091097 - 2¹⁵ = 74058329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74091037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37045548 + 37045549.

It is an arithmetic number, because the mean of its divisors is an integer number (37045549).

Almost surely, 2^74091097 is an apocalyptic number.

It is an amenable number.

74091097 is a deficient number, since it is larger than the sum of its proper divisors (1).

74091097 is an equidigital number, since it uses as much as digits as its factorization.

74091097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 74091097 is about 8607.6185440574. The cubic root of 74091097 is about 420.0058521482.

The spelling of 74091097 in words is "seventy-four million, ninety-one thousand, ninety-seven".