40440093 has 16 divisors (see below), whose sum is σ = 57537216. Its totient is φ = 25176320.

The previous prime is 40440091. The next prime is 40440119. The reversal of 40440093 is 39004404.

It is not a de Polignac number, because 40440093 - 2¹ = 40440091 is a prime.

It is a super-2 number, since 2×40440093² = 3270802243697298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440091) 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 15 ways as a sum of consecutive naturals, for example, 3655 + ... + 9707.

It is an arithmetic number, because the mean of its divisors is an integer number (3596076).

Almost surely, 2^40440093 is an apocalyptic number.

It is an amenable number.

40440093 is a deficient number, since it is larger than the sum of its proper divisors (17097123).

40440093 is a wasteful number, since it uses less digits than its factorization.

40440093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40440093 is about 6359.2525504182. The cubic root of 40440093 is about 343.2448647750.

Adding to 40440093 its reverse (39004404), we get a palindrome (79444497).

The spelling of 40440093 in words is "forty million, four hundred forty thousand, ninety-three".