749423443 has 4 divisors (see below), whose sum is σ = 749641608. Its totient is φ = 749205280.

The previous prime is 749423407. The next prime is 749423447. The reversal of 749423443 is 344324947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344324947 = 15649 ⋅22003.

It is a cyclic number.

It is not a de Polignac number, because 749423443 - 2⁹ = 749422931 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749423396 and 749423405.

It is not an unprimeable number, because it can be changed into a prime (749423447) 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, 103846 + ... + 110827.

It is an arithmetic number, because the mean of its divisors is an integer number (187410402).

Almost surely, 2^749423443 is an apocalyptic number.

749423443 is a deficient number, since it is larger than the sum of its proper divisors (218165).

749423443 is a wasteful number, since it uses less digits than its factorization.

749423443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218164.

The product of its digits is 290304, while the sum is 40.

The square root of 749423443 is about 27375.5994089627. The cubic root of 749423443 is about 908.3274203769.

The spelling of 749423443 in words is "seven hundred forty-nine million, four hundred twenty-three thousand, four hundred forty-three".