287438979799 has 2 divisors, whose sum is σ = 287438979800. Its totient is φ = 287438979798.

The previous prime is 287438979797. The next prime is 287438979823. The reversal of 287438979799 is 997979834782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 287438979799 - 2¹ = 287438979797 is a prime.

Together with 287438979797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287438979797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143719489899 + 143719489900.

It is an arithmetic number, because the mean of its divisors is an integer number (143719489900).

Almost surely, 2^287438979799 is an apocalyptic number.

287438979799 is a deficient number, since it is larger than the sum of its proper divisors (1).

287438979799 is an equidigital number, since it uses as much as digits as its factorization.

287438979799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456649728, while the sum is 82.

The spelling of 287438979799 in words is "two hundred eighty-seven billion, four hundred thirty-eight million, nine hundred seventy-nine thousand, seven hundred ninety-nine".