1287474079 has 2 divisors, whose sum is σ = 1287474080. Its totient is φ = 1287474078.

The previous prime is 1287474049. The next prime is 1287474091. The reversal of 1287474079 is 9704747821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9704747821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1287474079 - 2⁵ = 1287474047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287474049) 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, 643737039 + 643737040.

It is an arithmetic number, because the mean of its divisors is an integer number (643737040).

Almost surely, 2^1287474079 is an apocalyptic number.

1287474079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287474079 is an equidigital number, since it uses as much as digits as its factorization.

1287474079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 49.

The square root of 1287474079 is about 35881.3890338710. The cubic root of 1287474079 is about 1087.8762561899.

The spelling of 1287474079 in words is "one billion, two hundred eighty-seven million, four hundred seventy-four thousand, seventy-nine".