40342839 has 16 divisors (see below), whose sum is σ = 56033280. Its totient is φ = 25794720.

The previous prime is 40342823. The next prime is 40342849. The reversal of 40342839 is 93824304.

It is not a de Polignac number, because 40342839 - 2⁴ = 40342823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5322 + ... + 10440.

It is an arithmetic number, because the mean of its divisors is an integer number (3502080).

Almost surely, 2^40342839 is an apocalyptic number.

40342839 is a deficient number, since it is larger than the sum of its proper divisors (15690441).

40342839 is a wasteful number, since it uses less digits than its factorization.

40342839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 40342839 is about 6351.6012941620. The cubic root of 40342839 is about 342.9694884560.

The spelling of 40342839 in words is "forty million, three hundred forty-two thousand, eight hundred thirty-nine".