147967999 has 2 divisors, whose sum is σ = 147968000. Its totient is φ = 147967998.

The previous prime is 147967987. The next prime is 147968021. The reversal of 147967999 is 999769741.

It is a weak prime.

It is an emirp because it is prime and its reverse (999769741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147967999 - 2⁷ = 147967871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147967909) 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, 73983999 + 73984000.

It is an arithmetic number, because the mean of its divisors is an integer number (73984000).

Almost surely, 2^147967999 is an apocalyptic number.

147967999 is a deficient number, since it is larger than the sum of its proper divisors (1).

147967999 is an equidigital number, since it uses as much as digits as its factorization.

147967999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7715736, while the sum is 61.

The square root of 147967999 is about 12164.2097564947. The cubic root of 147967999 is about 528.9191202851.

The spelling of 147967999 in words is "one hundred forty-seven million, nine hundred sixty-seven thousand, nine hundred ninety-nine".