40010993 has 12 divisors (see below), whose sum is σ = 44490768. Its totient is φ = 35676960.

The previous prime is 40010989. The next prime is 40011001. The reversal of 40010993 is 39901004.

It is a happy number.

It is not a de Polignac number, because 40010993 - 2² = 40010989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40010983) 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 11 ways as a sum of consecutive naturals, for example, 171605 + ... + 171837.

It is an arithmetic number, because the mean of its divisors is an integer number (3707564).

Almost surely, 2^40010993 is an apocalyptic number.

It is an amenable number.

40010993 is a deficient number, since it is larger than the sum of its proper divisors (4479775).

40010993 is an equidigital number, since it uses as much as digits as its factorization.

40010993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 40010993 is about 6325.4243335922. The cubic root of 40010993 is about 342.0265160750.

Adding to 40010993 its reverse (39901004), we get a palindrome (79911997).

The spelling of 40010993 in words is "forty million, ten thousand, nine hundred ninety-three".