41689729 has 4 divisors (see below), whose sum is σ = 44142084. Its totient is φ = 39237376.

The previous prime is 41689717. The next prime is 41689757. The reversal of 41689729 is 92798614.

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 38155329 + 3534400 = 6177^2 + 1880^2 .

It is a cyclic number.

It is not a de Polignac number, because 41689729 - 2⁷ = 41689601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41689229) 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, 1226152 + ... + 1226185.

It is an arithmetic number, because the mean of its divisors is an integer number (11035521).

Almost surely, 2^41689729 is an apocalyptic number.

It is an amenable number.

41689729 is a deficient number, since it is larger than the sum of its proper divisors (2452355).

41689729 is a wasteful number, since it uses less digits than its factorization.

41689729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452354.

The product of its digits is 217728, while the sum is 46.

The square root of 41689729 is about 6456.7583972145. The cubic root of 41689729 is about 346.7445874933.

The spelling of 41689729 in words is "forty-one million, six hundred eighty-nine thousand, seven hundred twenty-nine".