74098391 has 2 divisors, whose sum is σ = 74098392. Its totient is φ = 74098390.

The previous prime is 74098379. The next prime is 74098403. The reversal of 74098391 is 19389047.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (74098379) and next prime (74098403).

It is an emirp because it is prime and its reverse (19389047) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74098391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74098301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37049195 + 37049196.

It is an arithmetic number, because the mean of its divisors is an integer number (37049196).

Almost surely, 2^74098391 is an apocalyptic number.

74098391 is a deficient number, since it is larger than the sum of its proper divisors (1).

74098391 is an equidigital number, since it uses as much as digits as its factorization.

74098391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 74098391 is about 8608.0422280563. The cubic root of 74098391 is about 420.0196343807.

The spelling of 74098391 in words is "seventy-four million, ninety-eight thousand, three hundred ninety-one".