40300993 has 4 divisors (see below), whose sum is σ = 40331200. Its totient is φ = 40270788.

The previous prime is 40300973. The next prime is 40301017. The reversal of 40300993 is 39900304.

40300993 is nontrivially palindromic in base 14.

40300993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40300993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40300903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13005 + ... + 15802.

It is an arithmetic number, because the mean of its divisors is an integer number (10082800).

Almost surely, 2^40300993 is an apocalyptic number.

It is an amenable number.

40300993 is a deficient number, since it is larger than the sum of its proper divisors (30207).

40300993 is a wasteful number, since it uses less digits than its factorization.

40300993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30206.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 40300993 is about 6348.3063095601. The cubic root of 40300993 is about 342.8508646254.

Subtracting from 40300993 its reverse (39900304), we obtain a square (400689 = 633²).

The spelling of 40300993 in words is "forty million, three hundred thousand, nine hundred ninety-three".