41644997 has 4 divisors (see below), whose sum is σ = 42988416. Its totient is φ = 40301580.

The previous prime is 41644991. The next prime is 41645003. The reversal of 41644997 is 79944614.

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 an interprime number because it is at equal distance from previous prime (41644991) and next prime (41645003).

It is a cyclic number.

It is not a de Polignac number, because 41644997 - 2¹⁸ = 41382853 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 (41644991) 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, 671663 + ... + 671724.

It is an arithmetic number, because the mean of its divisors is an integer number (10747104).

Almost surely, 2^41644997 is an apocalyptic number.

It is an amenable number.

41644997 is a deficient number, since it is larger than the sum of its proper divisors (1343419).

41644997 is a wasteful number, since it uses less digits than its factorization.

41644997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343418.

The product of its digits is 217728, while the sum is 44.

The square root of 41644997 is about 6453.2935002214. The cubic root of 41644997 is about 346.6205271228.

The spelling of 41644997 in words is "forty-one million, six hundred forty-four thousand, nine hundred ninety-seven".