747289 has 8 divisors (see below), whose sum is σ = 808640. Its totient is φ = 688176.

The previous prime is 747287. The next prime is 747319. The reversal of 747289 is 982747.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 747289 - 2¹ = 747287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an Ulam number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (747283) 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, 172 + ... + 1234.

It is an arithmetic number, because the mean of its divisors is an integer number (101080).

2⁷⁴⁷²⁸⁹ is an apocalyptic number.

It is an amenable number.

747289 is a deficient number, since it is larger than the sum of its proper divisors (61351).

747289 is a wasteful number, since it uses less digits than its factorization.

747289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119.

The product of its digits is 28224, while the sum is 37.

The square root of 747289 is about 864.4587902266. The cubic root of 747289 is about 90.7464260546.

The spelling of 747289 in words is "seven hundred forty-seven thousand, two hundred eighty-nine".