7940207 has 8 divisors (see below), whose sum is σ = 9171792. Its totient is φ = 6793600.

The previous prime is 7940197. The next prime is 7940209. The reversal of 7940207 is 7020497.

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

It is not a de Polignac number, because 7940207 - 2⁸ = 7939951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7940207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21044 + ... + 21417.

It is an arithmetic number, because the mean of its divisors is an integer number (1146474).

Almost surely, 2^7940207 is an apocalyptic number.

7940207 is a deficient number, since it is larger than the sum of its proper divisors (1231585).

7940207 is a wasteful number, since it uses less digits than its factorization.

7940207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42489.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 7940207 is about 2817.8372912573. The cubic root of 7940207 is about 199.5004784297.

The spelling of 7940207 in words is "seven million, nine hundred forty thousand, two hundred seven".