7940863417 has 4 divisors (see below), whose sum is σ = 7941058020. Its totient is φ = 7940668816.

The previous prime is 7940863397. The next prime is 7940863451. The reversal of 7940863417 is 7143680497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7143680497 = 89 ⋅80266073.

It can be written as a sum of positive squares in 2 ways, for example, as 6073240761 + 1867622656 = 77931^2 + 43216^2 .

It is a cyclic number.

It is not a de Polignac number, because 7940863417 - 2³¹ = 5793379769 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7940863457) 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, 9958 + ... + 126415.

It is an arithmetic number, because the mean of its divisors is an integer number (1985264505).

Almost surely, 2^7940863417 is an apocalyptic number.

It is an amenable number.

7940863417 is a deficient number, since it is larger than the sum of its proper divisors (194603).

7940863417 is a wasteful number, since it uses less digits than its factorization.

7940863417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194602.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 7940863417 is about 89111.5223582226. The cubic root of 7940863417 is about 1995.0597584711.

The spelling of 7940863417 in words is "seven billion, nine hundred forty million, eight hundred sixty-three thousand, four hundred seventeen".