41809397 has 12 divisors (see below), whose sum is σ = 48898476. Its totient is φ = 35642880.

The previous prime is 41809379. The next prime is 41809399. The reversal of 41809397 is 79390814.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22791076 + 19018321 = 4774^2 + 4361^2 .

It is not a de Polignac number, because 41809397 - 2¹⁴ = 41793013 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 (41809399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7247 + ... + 11667.

It is an arithmetic number, because the mean of its divisors is an integer number (4074873).

Almost surely, 2^41809397 is an apocalyptic number.

It is an amenable number.

41809397 is a deficient number, since it is larger than the sum of its proper divisors (7089079).

41809397 is a wasteful number, since it uses less digits than its factorization.

41809397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628 (or 4621 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 41809397 is about 6466.0186359150. The cubic root of 41809397 is about 347.0760407730.

The spelling of 41809397 in words is "forty-one million, eight hundred nine thousand, three hundred ninety-seven".