40539933 has 24 divisors (see below), whose sum is σ = 69404608. Its totient is φ = 23164704.

The previous prime is 40539931. The next prime is 40539937. The reversal of 40539933 is 33993504.

It is a happy number.

It is not a de Polignac number, because 40539933 - 2¹ = 40539931 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40539931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10216 + ... + 13617.

Almost surely, 2^40539933 is an apocalyptic number.

It is an amenable number.

40539933 is a deficient number, since it is larger than the sum of its proper divisors (28864675).

40539933 is an equidigital number, since it uses as much as digits as its factorization.

40539933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23855 (or 23843 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 36.

The square root of 40539933 is about 6367.0976904709. The cubic root of 40539933 is about 343.5271045144.

The spelling of 40539933 in words is "forty million, five hundred thirty-nine thousand, nine hundred thirty-three".