41397709 has 4 divisors (see below), whose sum is σ = 42516604. Its totient is φ = 40278816.

The previous prime is 41397673. The next prime is 41397767. The reversal of 41397709 is 90779314.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90779314 = 2 ⋅45389657.

It can be written as a sum of positive squares in 2 ways, for example, as 39375625 + 2022084 = 6275^2 + 1422^2 .

It is a cyclic number.

It is not a de Polignac number, because 41397709 - 2⁷ = 41397581 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 (41397799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559392 + ... + 559465.

It is an arithmetic number, because the mean of its divisors is an integer number (10629151).

Almost surely, 2^41397709 is an apocalyptic number.

It is an amenable number.

41397709 is a deficient number, since it is larger than the sum of its proper divisors (1118895).

41397709 is a wasteful number, since it uses less digits than its factorization.

41397709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118894.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 41397709 is about 6434.1051436855. The cubic root of 41397709 is about 345.9330870639.

The spelling of 41397709 in words is "forty-one million, three hundred ninety-seven thousand, seven hundred nine".