749881 has 4 divisors (see below), whose sum is σ = 818064. Its totient is φ = 681700.

The previous prime is 749863. The next prime is 749891. The reversal of 749881 is 188947.

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 a cyclic number.

It is not a de Polignac number, because 749881 - 2¹¹ = 747833 is a prime.

It is a super-2 number, since 2×749881² = 1124643028322, which contains 22 as substring.

It is a Duffinian number.

749881 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 749881.

It is not an unprimeable number, because it can be changed into a prime (749851) 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 3 ways as a sum of consecutive naturals, for example, 34075 + ... + 34096.

It is an arithmetic number, because the mean of its divisors is an integer number (204516).

2⁷⁴⁹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

749881 is a deficient number, since it is larger than the sum of its proper divisors (68183).

749881 is a wasteful number, since it uses less digits than its factorization.

749881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68182.

The product of its digits is 16128, while the sum is 37.

The square root of 749881 is about 865.9566963769. The cubic root of 749881 is about 90.8512241130.

The spelling of 749881 in words is "seven hundred forty-nine thousand, eight hundred eighty-one".