40805959 has 4 divisors (see below), whose sum is σ = 40825504. Its totient is φ = 40786416.

The previous prime is 40805957. The next prime is 40805981. The reversal of 40805959 is 95950804.

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

It is a cyclic number.

It is not a de Polignac number, because 40805959 - 2¹ = 40805957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40805953) 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, 6207 + ... + 10960.

It is an arithmetic number, because the mean of its divisors is an integer number (10206376).

Almost surely, 2^40805959 is an apocalyptic number.

40805959 is a deficient number, since it is larger than the sum of its proper divisors (19545).

40805959 is a wasteful number, since it uses less digits than its factorization.

40805959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19544.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 40805959 is about 6387.9542108566. The cubic root of 40805959 is about 344.2768835098.

The spelling of 40805959 in words is "forty million, eight hundred five thousand, nine hundred fifty-nine".