7940971 has 2 divisors, whose sum is σ = 7940972. Its totient is φ = 7940970.

The previous prime is 7940963. The next prime is 7940981. The reversal of 7940971 is 1790497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7940971 - 2³ = 7940963 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7940971.

It is not a weakly prime, because it can be changed into another prime (7940981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3970485 + 3970486.

It is an arithmetic number, because the mean of its divisors is an integer number (3970486).

Almost surely, 2^7940971 is an apocalyptic number.

7940971 is a deficient number, since it is larger than the sum of its proper divisors (1).

7940971 is an equidigital number, since it uses as much as digits as its factorization.

7940971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 7940971 is about 2817.9728529565. The cubic root of 7940971 is about 199.5068768136.

It can be divided in two parts, 7940 and 971, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 7940971 in words is "seven million, nine hundred forty thousand, nine hundred seventy-one".