41898721 has 2 divisors, whose sum is σ = 41898722. Its totient is φ = 41898720.

The previous prime is 41898719. The next prime is 41898737. The reversal of 41898721 is 12789814.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41152225 + 746496 = 6415^2 + 864^2 .

It is a cyclic number.

It is not a de Polignac number, because 41898721 - 2¹ = 41898719 is a prime.

Together with 41898719, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (41898751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20949360 + 20949361.

It is an arithmetic number, because the mean of its divisors is an integer number (20949361).

Almost surely, 2^41898721 is an apocalyptic number.

It is an amenable number.

41898721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41898721 is an equidigital number, since it uses as much as digits as its factorization.

41898721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 40.

The square root of 41898721 is about 6472.9221376439. The cubic root of 41898721 is about 347.3230360288.

The spelling of 41898721 in words is "forty-one million, eight hundred ninety-eight thousand, seven hundred twenty-one".