749181747 has 8 divisors (see below), whose sum is σ = 999104400. Its totient is φ = 499356800.

The previous prime is 749181707. The next prime is 749181749. The reversal of 749181747 is 747181947.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 749181747 - 2⁶ = 749181683 is a prime.

It is a super-2 number, since 2×749181747² = 1122546580075944018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 749181696 and 749181705.

It is not an unprimeable number, because it can be changed into a prime (749181749) 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 7 ways as a sum of consecutive naturals, for example, 4122 + ... + 38927.

It is an arithmetic number, because the mean of its divisors is an integer number (124888050).

Almost surely, 2^749181747 is an apocalyptic number.

749181747 is a deficient number, since it is larger than the sum of its proper divisors (249922653).

749181747 is a wasteful number, since it uses less digits than its factorization.

749181747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48853.

The product of its digits is 395136, while the sum is 48.

The square root of 749181747 is about 27371.1846108275. The cubic root of 749181747 is about 908.2297618762.

The spelling of 749181747 in words is "seven hundred forty-nine million, one hundred eighty-one thousand, seven hundred forty-seven".