40323393 has 32 divisors (see below), whose sum is σ = 68014080. Its totient is φ = 23371920.

The previous prime is 40323331. The next prime is 40323421. The reversal of 40323393 is 39332304.

It is not a de Polignac number, because 40323393 - 2⁶ = 40323329 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40323193) 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 31 ways as a sum of consecutive naturals, for example, 3880 + ... + 9782.

It is an arithmetic number, because the mean of its divisors is an integer number (2125440).

Almost surely, 2^40323393 is an apocalyptic number.

It is an amenable number.

40323393 is a deficient number, since it is larger than the sum of its proper divisors (27690687).

40323393 is a wasteful number, since it uses less digits than its factorization.

40323393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946 (or 5940 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

The square root of 40323393 is about 6350.0703145713. The cubic root of 40323393 is about 342.9143737052.

Adding to 40323393 its reverse (39332304), we get a palindrome (79655697).

The spelling of 40323393 in words is "forty million, three hundred twenty-three thousand, three hundred ninety-three".