41820839 has 4 divisors (see below), whose sum is σ = 41983824. Its totient is φ = 41657856.

The previous prime is 41820827. The next prime is 41820853. The reversal of 41820839 is 93802814.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41820839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 41820799 and 41820808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41820899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81107 + ... + 81620.

It is an arithmetic number, because the mean of its divisors is an integer number (10495956).

Almost surely, 2^41820839 is an apocalyptic number.

41820839 is a deficient number, since it is larger than the sum of its proper divisors (162985).

41820839 is a wasteful number, since it uses less digits than its factorization.

41820839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162984.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 41820839 is about 6466.9033547750. The cubic root of 41820839 is about 347.1076993802.

The spelling of 41820839 in words is "forty-one million, eight hundred twenty thousand, eight hundred thirty-nine".