40855207 has 4 divisors (see below), whose sum is σ = 41259816. Its totient is φ = 40450600.

The previous prime is 40855201. The next prime is 40855211. The reversal of 40855207 is 70255804.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40855207 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 (40855201) 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, 202153 + ... + 202354.

It is an arithmetic number, because the mean of its divisors is an integer number (10314954).

Almost surely, 2^40855207 is an apocalyptic number.

40855207 is a deficient number, since it is larger than the sum of its proper divisors (404609).

40855207 is a wasteful number, since it uses less digits than its factorization.

40855207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404608.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 40855207 is about 6391.8078037438. The cubic root of 40855207 is about 344.4153284172.

The spelling of 40855207 in words is "forty million, eight hundred fifty-five thousand, two hundred seven".