1147887047 has 2 divisors, whose sum is σ = 1147887048. Its totient is φ = 1147887046.

The previous prime is 1147887043. The next prime is 1147887089. The reversal of 1147887047 is 7407887411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1147887047 - 2² = 1147887043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1147886992 and 1147887010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147887043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573943523 + 573943524.

It is an arithmetic number, because the mean of its divisors is an integer number (573943524).

Almost surely, 2^1147887047 is an apocalyptic number.

1147887047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147887047 is an equidigital number, since it uses as much as digits as its factorization.

1147887047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 351232, while the sum is 47.

The square root of 1147887047 is about 33880.4817999981. The cubic root of 1147887047 is about 1047.0475021680.

The spelling of 1147887047 in words is "one billion, one hundred forty-seven million, eight hundred eighty-seven thousand, forty-seven".