147212999 has 2 divisors, whose sum is σ = 147213000. Its totient is φ = 147212998.

The previous prime is 147212993. The next prime is 147213023. The reversal of 147212999 is 999212741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 147212999 - 2⁴ = 147212983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147212993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73606499 + 73606500.

It is an arithmetic number, because the mean of its divisors is an integer number (73606500).

Almost surely, 2^147212999 is an apocalyptic number.

147212999 is a deficient number, since it is larger than the sum of its proper divisors (1).

147212999 is an equidigital number, since it uses as much as digits as its factorization.

147212999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 147212999 is about 12133.1364040795. The cubic root of 147212999 is about 528.0179906156.

The spelling of 147212999 in words is "one hundred forty-seven million, two hundred twelve thousand, nine hundred ninety-nine".