40550393 has 8 divisors (see below), whose sum is σ = 43743168. Its totient is φ = 37368144.

The previous prime is 40550339. The next prime is 40550399. The reversal of 40550393 is 39305504.

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 40550393 - 2⁶ = 40550329 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 (40550399) 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, 6596 + ... + 11162.

It is an arithmetic number, because the mean of its divisors is an integer number (5467896).

Almost surely, 2^40550393 is an apocalyptic number.

It is an amenable number.

40550393 is a deficient number, since it is larger than the sum of its proper divisors (3192775).

40550393 is a wasteful number, since it uses less digits than its factorization.

40550393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 40550393 is about 6367.9190478523. The cubic root of 40550393 is about 343.5566472742.

Adding to 40550393 its reverse (39305504), we get a palindrome (79855897).

The spelling of 40550393 in words is "forty million, five hundred fifty thousand, three hundred ninety-three".