74404091 has 2 divisors, whose sum is σ = 74404092. Its totient is φ = 74404090.

The previous prime is 74404081. The next prime is 74404097. The reversal of 74404091 is 19040447.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74404091 is a prime.

It is not a weakly prime, because it can be changed into another prime (74404097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37202045 + 37202046.

It is an arithmetic number, because the mean of its divisors is an integer number (37202046).

Almost surely, 2^74404091 is an apocalyptic number.

74404091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74404091 is an equidigital number, since it uses as much as digits as its factorization.

74404091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 74404091 is about 8625.7806023571. The cubic root of 74404091 is about 420.5964522603.

The spelling of 74404091 in words is "seventy-four million, four hundred four thousand, ninety-one".