40328393 has 12 divisors (see below), whose sum is σ = 48646080. Its totient is φ = 32745816.

The previous prime is 40328383. The next prime is 40328399. The reversal of 40328393 is 39382304.

It is a happy number.

It is not a de Polignac number, because 40328393 - 2⁴ = 40328377 is a prime.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (40328399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5453 + ... + 10506.

It is an arithmetic number, because the mean of its divisors is an integer number (4053840).

Almost surely, 2^40328393 is an apocalyptic number.

It is an amenable number.

40328393 is a deficient number, since it is larger than the sum of its proper divisors (8317687).

40328393 is a wasteful number, since it uses less digits than its factorization.

40328393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16004 (or 15985 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40328393 is about 6350.4639987957. The cubic root of 40328393 is about 342.9285466280.

The spelling of 40328393 in words is "forty million, three hundred twenty-eight thousand, three hundred ninety-three".