749440 has 32 divisors (see below), whose sum is σ = 1793160. Its totient is φ = 299520.

The previous prime is 749431. The next prime is 749443. The reversal of 749440 is 44947.

749440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 749399 and 749408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749443) 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, 55 + ... + 1225.

2⁷⁴⁹⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896580).

749440 is an abundant number, since it is smaller than the sum of its proper divisors (1043720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749440 is a wasteful number, since it uses less digits than its factorization.

749440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 749440 is about 865.7020272588. The cubic root of 749440 is about 90.8334109549.

The spelling of 749440 in words is "seven hundred forty-nine thousand, four hundred forty".