40207807 has 4 divisors (see below), whose sum is σ = 40327456. Its totient is φ = 40088160.

The previous prime is 40207793. The next prime is 40207813. The reversal of 40207807 is 70870204.

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-40207807 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 (40207847) 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, 59319 + ... + 59992.

It is an arithmetic number, because the mean of its divisors is an integer number (10081864).

Almost surely, 2^40207807 is an apocalyptic number.

40207807 is a deficient number, since it is larger than the sum of its proper divisors (119649).

40207807 is a wasteful number, since it uses less digits than its factorization.

40207807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119648.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 40207807 is about 6340.9626240816. The cubic root of 40207807 is about 342.5864083049.

It can be divided in two parts, 40207 and 807, that added together give a palindrome (41014).

The spelling of 40207807 in words is "forty million, two hundred seven thousand, eight hundred seven".