749789 has 4 divisors (see below), whose sum is σ = 759360. Its totient is φ = 740220.

The previous prime is 749779. The next prime is 749803. The reversal of 749789 is 987947.

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, and also an emirpimes, since its reverse is a distinct semiprime: 987947 = 523 ⋅1889.

It is a cyclic number.

It is not a de Polignac number, because 749789 - 2⁴ = 749773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749729) 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, 4667 + ... + 4824.

It is an arithmetic number, because the mean of its divisors is an integer number (189840).

2⁷⁴⁹⁷⁸⁹ is an apocalyptic number.

749789 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

749789 is a deficient number, since it is larger than the sum of its proper divisors (9571).

749789 is an equidigital number, since it uses as much as digits as its factorization.

749789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570.

The product of its digits is 127008, while the sum is 44.

The square root of 749789 is about 865.9035743084. The cubic root of 749789 is about 90.8475085659.

The spelling of 749789 in words is "seven hundred forty-nine thousand, seven hundred eighty-nine".