74709289 has 4 divisors (see below), whose sum is σ = 74909956. Its totient is φ = 74508624.

The previous prime is 74709269. The next prime is 74709301. The reversal of 74709289 is 98290747.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62283664 + 12425625 = 7892^2 + 3525^2 .

It is a cyclic number.

It is not a de Polignac number, because 74709289 - 2⁷ = 74709161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74709269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99774 + ... + 100519.

It is an arithmetic number, because the mean of its divisors is an integer number (18727489).

Almost surely, 2^74709289 is an apocalyptic number.

It is an amenable number.

74709289 is a deficient number, since it is larger than the sum of its proper divisors (200667).

74709289 is a wasteful number, since it uses less digits than its factorization.

74709289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200666.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 74709289 is about 8643.4535343230. The cubic root of 74709289 is about 421.1707490027.

The spelling of 74709289 in words is "seventy-four million, seven hundred nine thousand, two hundred eighty-nine".