749436847 has 4 divisors (see below), whose sum is σ = 749617720. Its totient is φ = 749255976.

The previous prime is 749436829. The next prime is 749436851. The reversal of 749436847 is 748634947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748634947 = 331 ⋅2261737.

It is a cyclic number.

It is not a de Polignac number, because 749436847 - 2¹⁵ = 749404079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749436794 and 749436803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749431847) 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, 84072 + ... + 92557.

It is an arithmetic number, because the mean of its divisors is an integer number (187404430).

Almost surely, 2^749436847 is an apocalyptic number.

749436847 is a deficient number, since it is larger than the sum of its proper divisors (180873).

749436847 is a wasteful number, since it uses less digits than its factorization.

749436847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180872.

The product of its digits is 4064256, while the sum is 52.

The square root of 749436847 is about 27375.8442244253. The cubic root of 749436847 is about 908.3328357169.

The spelling of 749436847 in words is "seven hundred forty-nine million, four hundred thirty-six thousand, eight hundred forty-seven".