41993621 has 4 divisors (see below), whose sum is σ = 44463852. Its totient is φ = 39523392.

The previous prime is 41993603. The next prime is 41993647. The reversal of 41993621 is 12639914.

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 36300625 + 5692996 = 6025^2 + 2386^2 .

It is a cyclic number.

It is not a de Polignac number, because 41993621 - 2¹⁰ = 41992597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41993921) 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, 1235090 + ... + 1235123.

It is an arithmetic number, because the mean of its divisors is an integer number (11115963).

Almost surely, 2^41993621 is an apocalyptic number.

It is an amenable number.

41993621 is a deficient number, since it is larger than the sum of its proper divisors (2470231).

41993621 is a wasteful number, since it uses less digits than its factorization.

41993621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470230.

The product of its digits is 11664, while the sum is 35.

The square root of 41993621 is about 6480.2485291847. The cubic root of 41993621 is about 347.5850655231.

The spelling of 41993621 in words is "forty-one million, nine hundred ninety-three thousand, six hundred twenty-one".