40309233 has 8 divisors (see below), whose sum is σ = 53977248. Its totient is φ = 26757024.

The previous prime is 40309231. The next prime is 40309253. The reversal of 40309233 is 33290304.

40309233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40309233 - 2¹ = 40309231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40309231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28135 + ... + 29532.

It is an arithmetic number, because the mean of its divisors is an integer number (6747156).

Almost surely, 2^40309233 is an apocalyptic number.

It is an amenable number.

40309233 is a deficient number, since it is larger than the sum of its proper divisors (13668015).

40309233 is a wasteful number, since it uses less digits than its factorization.

40309233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57903.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 40309233 is about 6348.9552683887. The cubic root of 40309233 is about 342.8742296296.

Adding to 40309233 its reverse (33290304), we get a palindrome (73599537).

The spelling of 40309233 in words is "forty million, three hundred nine thousand, two hundred thirty-three".