40803865 has 4 divisors (see below), whose sum is σ = 48964644. Its totient is φ = 32643088.

The previous prime is 40803857. The next prime is 40803881. The reversal of 40803865 is 56830804.

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 10067929 + 30735936 = 3173^2 + 5544^2 .

It is a cyclic number.

It is not a de Polignac number, because 40803865 - 2³ = 40803857 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 40803865.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4080382 + ... + 4080391.

It is an arithmetic number, because the mean of its divisors is an integer number (12241161).

Almost surely, 2^40803865 is an apocalyptic number.

It is an amenable number.

40803865 is a deficient number, since it is larger than the sum of its proper divisors (8160779).

40803865 is an equidigital number, since it uses as much as digits as its factorization.

40803865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160778.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 40803865 is about 6387.7903065145. The cubic root of 40803865 is about 344.2709944342.

The spelling of 40803865 in words is "forty million, eight hundred three thousand, eight hundred sixty-five".