41721899 has 4 divisors (see below), whose sum is σ = 41752920. Its totient is φ = 41690880.

The previous prime is 41721881. The next prime is 41721907. The reversal of 41721899 is 99812714.

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

It is a cyclic number.

It is not a de Polignac number, because 41721899 - 2¹² = 41717803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41721809) 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, 13397 + ... + 16214.

It is an arithmetic number, because the mean of its divisors is an integer number (10438230).

Almost surely, 2^41721899 is an apocalyptic number.

41721899 is a deficient number, since it is larger than the sum of its proper divisors (31021).

41721899 is a wasteful number, since it uses less digits than its factorization.

41721899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31020.

The product of its digits is 36288, while the sum is 41.

The square root of 41721899 is about 6459.2491049657. The cubic root of 41721899 is about 346.8337533836.

The spelling of 41721899 in words is "forty-one million, seven hundred twenty-one thousand, eight hundred ninety-nine".