42839769 has 24 divisors (see below), whose sum is σ = 67059360. Its totient is φ = 24253824.

The previous prime is 42839729. The next prime is 42839773. The reversal of 42839769 is 96793824.

It is not a de Polignac number, because 42839769 - 2⁹ = 42839257 is a prime.

It is a super-2 number, since 2×42839769² = 3670491615946722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42839729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15322 + ... + 17900.

It is an arithmetic number, because the mean of its divisors is an integer number (2794140).

Almost surely, 2^42839769 is an apocalyptic number.

42839769 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

42839769 is a deficient number, since it is larger than the sum of its proper divisors (24219591).

42839769 is a wasteful number, since it uses less digits than its factorization.

42839769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709 (or 2702 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 42839769 is about 6545.2096223116. The cubic root of 42839769 is about 349.9041070630.

The spelling of 42839769 in words is "forty-two million, eight hundred thirty-nine thousand, seven hundred sixty-nine".