40013233 has 8 divisors (see below), whose sum is σ = 43205288. Its totient is φ = 36837504.

The previous prime is 40013227. The next prime is 40013249. The reversal of 40013233 is 33231004.

It can be written as a sum of positive squares in 4 ways, for example, as 14379264 + 25633969 = 3792^2 + 5063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40013233 - 2⁵ = 40013201 is a prime.

It is a super-2 number, since 2×40013233² = 3202117630224578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40013293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285 + ... + 9037.

It is an arithmetic number, because the mean of its divisors is an integer number (5400661).

Almost surely, 2^40013233 is an apocalyptic number.

It is an amenable number.

40013233 is a deficient number, since it is larger than the sum of its proper divisors (3192055).

40013233 is a wasteful number, since it uses less digits than its factorization.

40013233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8163.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 40013233 is about 6325.6013943340. The cubic root of 40013233 is about 342.0328986967.

Adding to 40013233 its reverse (33231004), we get a palindrome (73244237).

The spelling of 40013233 in words is "forty million, thirteen thousand, two hundred thirty-three".