8729942 has 16 divisors (see below), whose sum is σ = 14932512. Its totient is φ = 3792000.

The previous prime is 8729939. The next prime is 8729977. The reversal of 8729942 is 2499278.

It is a self number, because there is not a number n which added to its sum of digits gives 8729942.

It is a congruent number.

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, 9434 + ... + 10317.

It is an arithmetic number, because the mean of its divisors is an integer number (933282).

Almost surely, 2^8729942 is an apocalyptic number.

8729942 is a deficient number, since it is larger than the sum of its proper divisors (6202570).

8729942 is a wasteful number, since it uses less digits than its factorization.

8729942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19783.

The product of its digits is 72576, while the sum is 41.

The square root of 8729942 is about 2954.6475255096. The cubic root of 8729942 is about 205.9066878734.

The spelling of 8729942 in words is "eight million, seven hundred twenty-nine thousand, nine hundred forty-two".