41990909 has 4 divisors (see below), whose sum is σ = 42126240. Its totient is φ = 41855580.

The previous prime is 41990903. The next prime is 41990917. The reversal of 41990909 is 90909914.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 41990909 - 2⁸ = 41990653 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 (41990903) 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, 67199 + ... + 67820.

It is an arithmetic number, because the mean of its divisors is an integer number (10531560).

Almost surely, 2^41990909 is an apocalyptic number.

It is an amenable number.

41990909 is a deficient number, since it is larger than the sum of its proper divisors (135331).

41990909 is a wasteful number, since it uses less digits than its factorization.

41990909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135330.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 41990909 is about 6480.0392745723. The cubic root of 41990909 is about 347.5775828708.

The spelling of 41990909 in words is "forty-one million, nine hundred ninety thousand, nine hundred nine".