40868365 has 4 divisors (see below), whose sum is σ = 49042044. Its totient is φ = 32694688.

The previous prime is 40868341. The next prime is 40868369. The reversal of 40868365 is 56386804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25020004 + 15848361 = 5002^2 + 3981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40868365 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40868369) 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, 4086832 + ... + 4086841.

It is an arithmetic number, because the mean of its divisors is an integer number (12260511).

Almost surely, 2^40868365 is an apocalyptic number.

It is an amenable number.

40868365 is a deficient number, since it is larger than the sum of its proper divisors (8173679).

40868365 is an equidigital number, since it uses as much as digits as its factorization.

40868365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8173678.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 40868365 is about 6392.8370071511. The cubic root of 40868365 is about 344.4522990655.

The spelling of 40868365 in words is "forty million, eight hundred sixty-eight thousand, three hundred sixty-five".