1287671479 has 2 divisors, whose sum is σ = 1287671480. Its totient is φ = 1287671478.

The previous prime is 1287671417. The next prime is 1287671557. The reversal of 1287671479 is 9741767821.

It is a weak prime.

It is an emirp because it is prime and its reverse (9741767821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1287671479 - 2¹⁵ = 1287638711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287671279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643835739 + 643835740.

It is an arithmetic number, because the mean of its divisors is an integer number (643835740).

Almost surely, 2^1287671479 is an apocalyptic number.

1287671479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287671479 is an equidigital number, since it uses as much as digits as its factorization.

1287671479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 52.

The square root of 1287671479 is about 35884.1396580718. The cubic root of 1287671479 is about 1087.9318523380.

The spelling of 1287671479 in words is "one billion, two hundred eighty-seven million, six hundred seventy-one thousand, four hundred seventy-nine".