40043207 has 8 divisors (see below), whose sum is σ = 42192384. Its totient is φ = 37928088.

The previous prime is 40043189. The next prime is 40043209. The reversal of 40043207 is 70234004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40043207 - 2¹⁶ = 39977671 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 (40043209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6083 + ... + 10820.

It is an arithmetic number, because the mean of its divisors is an integer number (5274048).

Almost surely, 2^40043207 is an apocalyptic number.

40043207 is a deficient number, since it is larger than the sum of its proper divisors (2149177).

40043207 is a wasteful number, since it uses less digits than its factorization.

40043207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17029.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 40043207 is about 6327.9702116872. The cubic root of 40043207 is about 342.1182832429.

The spelling of 40043207 in words is "forty million, forty-three thousand, two hundred seven".