74311289 has 4 divisors (see below), whose sum is σ = 80027556. Its totient is φ = 68595024.

The previous prime is 74311243. The next prime is 74311291. The reversal of 74311289 is 98211347.

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 11505664 + 62805625 = 3392^2 + 7925^2 .

It is a cyclic number.

It is not a de Polignac number, because 74311289 - 2²⁴ = 57534073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74311789) 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, 2858114 + ... + 2858139.

It is an arithmetic number, because the mean of its divisors is an integer number (20006889).

Almost surely, 2^74311289 is an apocalyptic number.

It is an amenable number.

74311289 is a deficient number, since it is larger than the sum of its proper divisors (5716267).

74311289 is a wasteful number, since it uses less digits than its factorization.

74311289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716266.

The product of its digits is 12096, while the sum is 35.

The square root of 74311289 is about 8620.3995847060. The cubic root of 74311289 is about 420.4215137115.

The spelling of 74311289 in words is "seventy-four million, three hundred eleven thousand, two hundred eighty-nine".