749289 has 4 divisors (see below), whose sum is σ = 999056. Its totient is φ = 499524.

The previous prime is 749279. The next prime is 749297. The reversal of 749289 is 982947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 749289 - 2⁵ = 749257 is a prime.

It is a super-2 number, since 2×749289² = 1122868011042, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

749289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (749209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124879 + ... + 124884.

It is an arithmetic number, because the mean of its divisors is an integer number (249764).

2⁷⁴⁹²⁸⁹ is an apocalyptic number.

It is an amenable number.

749289 is a deficient number, since it is larger than the sum of its proper divisors (249767).

749289 is a wasteful number, since it uses less digits than its factorization.

749289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249766.

The product of its digits is 36288, while the sum is 39.

The square root of 749289 is about 865.6148104093. The cubic root of 749289 is about 90.8273100589.

The spelling of 749289 in words is "seven hundred forty-nine thousand, two hundred eighty-nine".