40229839 has 8 divisors (see below), whose sum is σ = 43381520. Its totient is φ = 37086336.

The previous prime is 40229747. The next prime is 40229863. The reversal of 40229839 is 93892204.

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 40229839 - 2¹¹ = 40227791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40229798 and 40229807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40229339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11584 + ... + 14650.

It is an arithmetic number, because the mean of its divisors is an integer number (5422690).

Almost surely, 2^40229839 is an apocalyptic number.

40229839 is a deficient number, since it is larger than the sum of its proper divisors (3151681).

40229839 is a wasteful number, since it uses less digits than its factorization.

40229839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 40229839 is about 6342.6996618159. The cubic root of 40229839 is about 342.6489706620.

It can be divided in two parts, 4022 and 9839, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 40229839 in words is "forty million, two hundred twenty-nine thousand, eight hundred thirty-nine".