40340693 has 8 divisors (see below), whose sum is σ = 41669280. Its totient is φ = 39024720.

The previous prime is 40340669. The next prime is 40340701. The reversal of 40340693 is 39604304.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40340693 - 2⁸ = 40340437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3578 + ... + 9668.

It is an arithmetic number, because the mean of its divisors is an integer number (5208660).

Almost surely, 2^40340693 is an apocalyptic number.

It is an amenable number.

40340693 is a deficient number, since it is larger than the sum of its proper divisors (1328587).

40340693 is a wasteful number, since it uses less digits than its factorization.

40340693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6307.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 40340693 is about 6351.4323581378. The cubic root of 40340693 is about 342.9634070333.

Adding to 40340693 its reverse (39604304), we get a palindrome (79944997).

The spelling of 40340693 in words is "forty million, three hundred forty thousand, six hundred ninety-three".