7922712947 has 2 divisors, whose sum is σ = 7922712948. Its totient is φ = 7922712946.

The previous prime is 7922712943. The next prime is 7922712953. The reversal of 7922712947 is 7492172297.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7922712947 - 2² = 7922712943 is a prime.

It is a super-2 number, since 2×7922712947² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7922712895 and 7922712904.

It is not a weakly prime, because it can be changed into another prime (7922712943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3961356473 + 3961356474.

It is an arithmetic number, because the mean of its divisors is an integer number (3961356474).

Almost surely, 2^7922712947 is an apocalyptic number.

7922712947 is a deficient number, since it is larger than the sum of its proper divisors (1).

7922712947 is an equidigital number, since it uses as much as digits as its factorization.

7922712947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 50.

The square root of 7922712947 is about 89009.6227775402. The cubic root of 7922712947 is about 1993.5385596247.

The spelling of 7922712947 in words is "seven billion, nine hundred twenty-two million, seven hundred twelve thousand, nine hundred forty-seven".