749989843 has 4 divisors (see below), whose sum is σ = 752659128. Its totient is φ = 747320560.

The previous prime is 749989813. The next prime is 749989847. The reversal of 749989843 is 348989947.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 749989843 - 2⁵ = 749989811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749989847) 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, 1334221 + ... + 1334782.

It is an arithmetic number, because the mean of its divisors is an integer number (188164782).

Almost surely, 2^749989843 is an apocalyptic number.

749989843 is a deficient number, since it is larger than the sum of its proper divisors (2669285).

749989843 is a wasteful number, since it uses less digits than its factorization.

749989843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669284.

The product of its digits is 15676416, while the sum is 61.

The square root of 749989843 is about 27385.9424340299. The cubic root of 749989843 is about 908.5561949545.

The spelling of 749989843 in words is "seven hundred forty-nine million, nine hundred eighty-nine thousand, eight hundred forty-three".