41540309 has 4 divisors (see below), whose sum is σ = 41558400. Its totient is φ = 41522220.

The previous prime is 41540297. The next prime is 41540311. The reversal of 41540309 is 90304514.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90304514 = 2 ⋅45152257.

It is a cyclic number.

It is not a de Polignac number, because 41540309 - 2⁴ = 41540293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41540509) 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, 4997 + ... + 10394.

It is an arithmetic number, because the mean of its divisors is an integer number (10389600).

Almost surely, 2^41540309 is an apocalyptic number.

It is an amenable number.

41540309 is a deficient number, since it is larger than the sum of its proper divisors (18091).

41540309 is a wasteful number, since it uses less digits than its factorization.

41540309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18090.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 41540309 is about 6445.1771891857. The cubic root of 41540309 is about 346.3298362738.

The spelling of 41540309 in words is "forty-one million, five hundred forty thousand, three hundred nine".