749091 has 8 divisors (see below), whose sum is σ = 1141504. Its totient is φ = 428040.

The previous prime is 749083. The next prime is 749093. The reversal of 749091 is 190947.

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

It is not a de Polignac number, because 749091 - 2³ = 749083 is a prime.

It is a super-2 number, since 2×749091² = 1122274652562, which contains 22 as substring.

It is the 866-th Hogben number.

749091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (749093) by changing a digit.

It is a nontrivial repunit in base 865.

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, 17815 + ... + 17856.

It is an arithmetic number, because the mean of its divisors is an integer number (142688).

2⁷⁴⁹⁰⁹¹ is an apocalyptic number.

749091 is a deficient number, since it is larger than the sum of its proper divisors (392413).

749091 is a wasteful number, since it uses less digits than its factorization.

749091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35681.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 749091 is about 865.5004332755. The cubic root of 749091 is about 90.8193089665.

The spelling of 749091 in words is "seven hundred forty-nine thousand, ninety-one".