74404387 has 2 divisors, whose sum is σ = 74404388. Its totient is φ = 74404386.

The previous prime is 74404367. The next prime is 74404397. The reversal of 74404387 is 78340447.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74404387 - 2⁷ = 74404259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74404367) 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, 37202193 + 37202194.

It is an arithmetic number, because the mean of its divisors is an integer number (37202194).

Almost surely, 2^74404387 is an apocalyptic number.

74404387 is a deficient number, since it is larger than the sum of its proper divisors (1).

74404387 is an equidigital number, since it uses as much as digits as its factorization.

74404387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 74404387 is about 8625.7977602075. The cubic root of 74404387 is about 420.5970100091.

The spelling of 74404387 in words is "seventy-four million, four hundred four thousand, three hundred eighty-seven".