41858821 has 4 divisors (see below), whose sum is σ = 42014700. Its totient is φ = 41702944.

The previous prime is 41858807. The next prime is 41858837. The reversal of 41858821 is 12885814.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8381025 + 33477796 = 2895^2 + 5786^2 .

It is a cyclic number.

It is not a de Polignac number, because 41858821 - 2⁷ = 41858693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41858851) 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, 77536 + ... + 78073.

It is an arithmetic number, because the mean of its divisors is an integer number (10503675).

Almost surely, 2^41858821 is an apocalyptic number.

It is an amenable number.

41858821 is a deficient number, since it is larger than the sum of its proper divisors (155879).

41858821 is a wasteful number, since it uses less digits than its factorization.

41858821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155878.

The product of its digits is 20480, while the sum is 37.

The square root of 41858821 is about 6469.8393333992. The cubic root of 41858821 is about 347.2127495239.

It can be divided in two parts, 418588 and 21, that added together give a square (418609 = 647²).

The spelling of 41858821 in words is "forty-one million, eight hundred fifty-eight thousand, eight hundred twenty-one".