1214249639 has 2 divisors, whose sum is σ = 1214249640. Its totient is φ = 1214249638.

The previous prime is 1214249581. The next prime is 1214249681. The reversal of 1214249639 is 9369424121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1214249639 - 2²⁰ = 1213201063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1214249596 and 1214249605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214249689) 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, 607124819 + 607124820.

It is an arithmetic number, because the mean of its divisors is an integer number (607124820).

Almost surely, 2^1214249639 is an apocalyptic number.

1214249639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214249639 is an equidigital number, since it uses as much as digits as its factorization.

1214249639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 1214249639 is about 34846.0849881303. The cubic root of 1214249639 is about 1066.8482791135.

The spelling of 1214249639 in words is "one billion, two hundred fourteen million, two hundred forty-nine thousand, six hundred thirty-nine".