947997959 has 2 divisors, whose sum is σ = 947997960. Its totient is φ = 947997958.

The previous prime is 947997917. The next prime is 947997983. The reversal of 947997959 is 959799749.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 947997959 - 2²⁴ = 931220743 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947987959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473998979 + 473998980.

It is an arithmetic number, because the mean of its divisors is an integer number (473998980).

Almost surely, 2^947997959 is an apocalyptic number.

947997959 is a deficient number, since it is larger than the sum of its proper divisors (1).

947997959 is an equidigital number, since it uses as much as digits as its factorization.

947997959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57868020, while the sum is 68.

The square root of 947997959 is about 30789.5754923643. The cubic root of 947997959 is about 982.3565248778.

The spelling of 947997959 in words is "nine hundred forty-seven million, nine hundred ninety-seven thousand, nine hundred fifty-nine".