40641799 has 16 divisors (see below), whose sum is σ = 46309536. Its totient is φ = 35337600.

The previous prime is 40641721. The next prime is 40641803. The reversal of 40641799 is 99714604.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40641799 - 2¹⁷ = 40510727 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 (40641709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24009 + ... + 25645.

It is an arithmetic number, because the mean of its divisors is an integer number (2894346).

Almost surely, 2^40641799 is an apocalyptic number.

40641799 is a deficient number, since it is larger than the sum of its proper divisors (5667737).

40641799 is a wasteful number, since it uses less digits than its factorization.

40641799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 40641799 is about 6375.0920777664. The cubic root of 40641799 is about 343.8145944067.

The spelling of 40641799 in words is "forty million, six hundred forty-one thousand, seven hundred ninety-nine".