74988091 has 2 divisors, whose sum is σ = 74988092. Its totient is φ = 74988090.

The previous prime is 74988059. The next prime is 74988097. The reversal of 74988091 is 19088947.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74988091 - 2⁵ = 74988059 is a prime.

It is not a weakly prime, because it can be changed into another prime (74988097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37494045 + 37494046.

It is an arithmetic number, because the mean of its divisors is an integer number (37494046).

Almost surely, 2^74988091 is an apocalyptic number.

74988091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74988091 is an equidigital number, since it uses as much as digits as its factorization.

74988091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 74988091 is about 8659.5664441125. The cubic root of 74988091 is about 421.6940104924.

The spelling of 74988091 in words is "seventy-four million, nine hundred eighty-eight thousand, ninety-one".