74949591 has 8 divisors (see below), whose sum is σ = 101198080. Its totient is φ = 49333752.

The previous prime is 74949557. The next prime is 74949613. The reversal of 74949591 is 19594947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74949591 - 2¹⁸ = 74687447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74949591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74949551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157885 + ... + 158358.

It is an arithmetic number, because the mean of its divisors is an integer number (12649760).

Almost surely, 2^74949591 is an apocalyptic number.

74949591 is a deficient number, since it is larger than the sum of its proper divisors (26248489).

74949591 is a wasteful number, since it uses less digits than its factorization.

74949591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316325.

The product of its digits is 408240, while the sum is 48.

The square root of 74949591 is about 8657.3431836794. The cubic root of 74949591 is about 421.6218301482.

The spelling of 74949591 in words is "seventy-four million, nine hundred forty-nine thousand, five hundred ninety-one".