42693839 has 8 divisors (see below), whose sum is σ = 43540368. Its totient is φ = 41852160.

The previous prime is 42693823. The next prime is 42693841. The reversal of 42693839 is 93839624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42693839 - 2⁴ = 42693823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42693839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42693869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20159 + ... + 22175.

It is an arithmetic number, because the mean of its divisors is an integer number (5442546).

Almost surely, 2^42693839 is an apocalyptic number.

42693839 is a deficient number, since it is larger than the sum of its proper divisors (846529).

42693839 is a wasteful number, since it uses less digits than its factorization.

42693839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425.

The product of its digits is 279936, while the sum is 44.

The square root of 42693839 is about 6534.0522648660. The cubic root of 42693839 is about 349.5063489643.

The spelling of 42693839 in words is "forty-two million, six hundred ninety-three thousand, eight hundred thirty-nine".