40204207 has 4 divisors (see below), whose sum is σ = 41952240. Its totient is φ = 38456176.

The previous prime is 40204189. The next prime is 40204243. The reversal of 40204207 is 70240204.

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 40204207 - 2¹¹ = 40202159 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 (40204267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873982 + ... + 874027.

It is an arithmetic number, because the mean of its divisors is an integer number (10488060).

Almost surely, 2^40204207 is an apocalyptic number.

40204207 is a deficient number, since it is larger than the sum of its proper divisors (1748033).

40204207 is a wasteful number, since it uses less digits than its factorization.

40204207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748032.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 40204207 is about 6340.6787491561. The cubic root of 40204207 is about 342.5761835254.

The spelling of 40204207 in words is "forty million, two hundred four thousand, two hundred seven".