947964851 has 2 divisors, whose sum is σ = 947964852. Its totient is φ = 947964850.

The previous prime is 947964833. The next prime is 947964869. The reversal of 947964851 is 158469749.

It is a balanced prime because it is at equal distance from previous prime (947964833) and next prime (947964869).

It is a cyclic number.

It is not a de Polignac number, because 947964851 - 2²² = 943770547 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 947964793 and 947964802.

It is not a weakly prime, because it can be changed into another prime (947964881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473982425 + 473982426.

It is an arithmetic number, because the mean of its divisors is an integer number (473982426).

Almost surely, 2^947964851 is an apocalyptic number.

947964851 is a deficient number, since it is larger than the sum of its proper divisors (1).

947964851 is an equidigital number, since it uses as much as digits as its factorization.

947964851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 53.

The square root of 947964851 is about 30789.0378381657. The cubic root of 947964851 is about 982.3450887637.

The spelling of 947964851 in words is "nine hundred forty-seven million, nine hundred sixty-four thousand, eight hundred fifty-one".