41001243989 has 4 divisors (see below), whose sum is σ = 41423937324. Its totient is φ = 40578550656.

The previous prime is 41001243979. The next prime is 41001244013. The reversal of 41001243989 is 98934210014.

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 6649587025 + 34351656964 = 81545^2 + 185342^2 .

It is a cyclic number.

It is not a de Polignac number, because 41001243989 - 2¹² = 41001239893 is a prime.

It is a super-2 number, since 2×41001243989² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41001243979) 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, 211346522 + ... + 211346715.

It is an arithmetic number, because the mean of its divisors is an integer number (10355984331).

Almost surely, 2^41001243989 is an apocalyptic number.

It is an amenable number.

41001243989 is a deficient number, since it is larger than the sum of its proper divisors (422693335).

41001243989 is an equidigital number, since it uses as much as digits as its factorization.

41001243989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422693334.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 41001243989 in words is "forty-one billion, one million, two hundred forty-three thousand, nine hundred eighty-nine".