40026993 has 16 divisors (see below), whose sum is σ = 56880000. Its totient is φ = 24950016.

The previous prime is 40026887. The next prime is 40026997. The reversal of 40026993 is 39962004.

It is not a de Polignac number, because 40026993 - 2¹⁴ = 40010609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40026997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5508 + ... + 10506.

It is an arithmetic number, because the mean of its divisors is an integer number (3555000).

Almost surely, 2^40026993 is an apocalyptic number.

It is an amenable number.

40026993 is a deficient number, since it is larger than the sum of its proper divisors (16853007).

40026993 is a wasteful number, since it uses less digits than its factorization.

40026993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 40026993 is about 6326.6889444638. The cubic root of 40026993 is about 342.0721010052.

Adding to 40026993 its reverse (39962004), we get a palindrome (79988997).

The spelling of 40026993 in words is "forty million, twenty-six thousand, nine hundred ninety-three".