843728994 has 16 divisors (see below), whose sum is σ = 1874953440. Its totient is φ = 281242980.

The previous prime is 843728983. The next prime is 843729001. The reversal of 843728994 is 499827348.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 15624611 = 843728994 / (8 + 4 + 3 + 7 + 2 + 8 + 9 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 843728994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7812252 + ... + 7812359.

It is an arithmetic number, because the mean of its divisors is an integer number (117184590).

Almost surely, 2^843728994 is an apocalyptic number.

843728994 is an abundant number, since it is smaller than the sum of its proper divisors (1031224446).

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

843728994 is a wasteful number, since it uses less digits than its factorization.

843728994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15624622 (or 15624616 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 843728994 is about 29047.0135125799. The cubic root of 843728994 is about 944.9329456075.

The spelling of 843728994 in words is "eight hundred forty-three million, seven hundred twenty-eight thousand, nine hundred ninety-four".