749329644 has 96 divisors (see below), whose sum is σ = 2088124416. Its totient is φ = 204632640.

The previous prime is 749329643. The next prime is 749329649. The reversal of 749329644 is 446923947.

It is a super-2 number, since 2×749329644² = 1122989830754333472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 749329593 and 749329602.

It is not an unprimeable number, because it can be changed into a prime (749329643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214399 + ... + 217865.

It is an arithmetic number, because the mean of its divisors is an integer number (21751296).

Almost surely, 2^749329644 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 749329644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1044062208).

749329644 is an abundant number, since it is smaller than the sum of its proper divisors (1338794772).

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

749329644 is a wasteful number, since it uses less digits than its factorization.

749329644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595 (or 3593 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 48.

The square root of 749329644 is about 27373.8861691211. The cubic root of 749329644 is about 908.2895229064.

The spelling of 749329644 in words is "seven hundred forty-nine million, three hundred twenty-nine thousand, six hundred forty-four".