74729091 has 8 divisors (see below), whose sum is σ = 100666384. Its totient is φ = 49305600.

The previous prime is 74729089. The next prime is 74729119. The reversal of 74729091 is 19092747.

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

It is not a de Polignac number, because 74729091 - 2¹ = 74729089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74729051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128110 + ... + 128691.

It is an arithmetic number, because the mean of its divisors is an integer number (12583298).

Almost surely, 2^74729091 is an apocalyptic number.

74729091 is a deficient number, since it is larger than the sum of its proper divisors (25937293).

74729091 is a wasteful number, since it uses less digits than its factorization.

74729091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256901.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 74729091 is about 8644.5989496332. The cubic root of 74729091 is about 421.2079567205.

The spelling of 74729091 in words is "seventy-four million, seven hundred twenty-nine thousand, ninety-one".