749940 has 48 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 192640.

The previous prime is 749939. The next prime is 749941. The reversal of 749940 is 49947.

It is an interprime number because it is at equal distance from previous prime (749939) and next prime (749941).

It is an Ulam number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749941) 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 15 ways as a sum of consecutive naturals, for example, 1525 + ... + 1955.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁷⁴⁹⁹⁴⁰ 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 749940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088640).

749940 is an abundant number, since it is smaller than the sum of its proper divisors (1427340).

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

749940 is a wasteful number, since it uses less digits than its factorization.

749940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 749940 is about 865.9907620754. The cubic root of 749940 is about 90.8536067495.

The spelling of 749940 in words is "seven hundred forty-nine thousand, nine hundred forty".