947699147 has 2 divisors, whose sum is σ = 947699148. Its totient is φ = 947699146.

The previous prime is 947699143. The next prime is 947699219. The reversal of 947699147 is 741996749.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 947699147 - 2² = 947699143 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 947699092 and 947699101.

It is not a weakly prime, because it can be changed into another prime (947699143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473849573 + 473849574.

It is an arithmetic number, because the mean of its divisors is an integer number (473849574).

Almost surely, 2^947699147 is an apocalyptic number.

947699147 is a deficient number, since it is larger than the sum of its proper divisors (1).

947699147 is an equidigital number, since it uses as much as digits as its factorization.

947699147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 947699147 is about 30784.7226234053. The cubic root of 947699147 is about 982.2533000546.

The spelling of 947699147 in words is "nine hundred forty-seven million, six hundred ninety-nine thousand, one hundred forty-seven".