40668833 has 4 divisors (see below), whose sum is σ = 40713540. Its totient is φ = 40624128.

The previous prime is 40668827. The next prime is 40668857. The reversal of 40668833 is 33886604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 877969 + 39790864 = 937^2 + 6308^2 .

It is a cyclic number.

It is not a de Polignac number, because 40668833 - 2⁶ = 40668769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42668833) 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, 20960 + ... + 22817.

It is an arithmetic number, because the mean of its divisors is an integer number (10178385).

Almost surely, 2^40668833 is an apocalyptic number.

It is an amenable number.

40668833 is a deficient number, since it is larger than the sum of its proper divisors (44707).

40668833 is an equidigital number, since it uses as much as digits as its factorization.

40668833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44706.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 40668833 is about 6377.2120083936. The cubic root of 40668833 is about 343.8908100588.

The spelling of 40668833 in words is "forty million, six hundred sixty-eight thousand, eight hundred thirty-three".