40065693 has 4 divisors (see below), whose sum is σ = 53420928. Its totient is φ = 26710460.

The previous prime is 40065689. The next prime is 40065703. The reversal of 40065693 is 39656004.

It is a happy number.

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 not a de Polignac number, because 40065693 - 2² = 40065689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40064693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6677613 + ... + 6677618.

It is an arithmetic number, because the mean of its divisors is an integer number (13355232).

Almost surely, 2^40065693 is an apocalyptic number.

It is an amenable number.

40065693 is a deficient number, since it is larger than the sum of its proper divisors (13355235).

40065693 is a wasteful number, since it uses less digits than its factorization.

40065693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355234.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 40065693 is about 6329.7466773955. The cubic root of 40065693 is about 342.1823093518.

The spelling of 40065693 in words is "forty million, sixty-five thousand, six hundred ninety-three".