40206693 has 8 divisors (see below), whose sum is σ = 53732800. Its totient is φ = 26742528.

The previous prime is 40206653. The next prime is 40206707. The reversal of 40206693 is 39660204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40206693 - 2⁶ = 40206629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40206693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40206613) 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 7 ways as a sum of consecutive naturals, for example, 13948 + ... + 16581.

It is an arithmetic number, because the mean of its divisors is an integer number (6716600).

Almost surely, 2^40206693 is an apocalyptic number.

It is an amenable number.

40206693 is a deficient number, since it is larger than the sum of its proper divisors (13526107).

40206693 is a wasteful number, since it uses less digits than its factorization.

40206693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30971.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 40206693 is about 6340.8747819209. The cubic root of 40206693 is about 342.5832443689.

Adding to 40206693 its reverse (39660204), we get a palindrome (79866897).

The spelling of 40206693 in words is "forty million, two hundred six thousand, six hundred ninety-three".