1284217939397 has 16 divisors (see below), whose sum is σ = 1359428790720. Its totient is φ = 1209770640000.

The previous prime is 1284217939349. The next prime is 1284217939399. The reversal of 1284217939397 is 7939397124821.

It is a cyclic number.

It is not a de Polignac number, because 1284217939397 - 2¹⁴ = 1284217923013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284217939399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44696078 + ... + 44724800.

It is an arithmetic number, because the mean of its divisors is an integer number (84964299420).

Almost surely, 2^{1284217939397} is an apocalyptic number.

It is an amenable number.

1284217939397 is a deficient number, since it is larger than the sum of its proper divisors (75210851323).

1284217939397 is a wasteful number, since it uses less digits than its factorization.

1284217939397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41924.

The product of its digits is 41150592, while the sum is 65.

The spelling of 1284217939397 in words is "one trillion, two hundred eighty-four billion, two hundred seventeen million, nine hundred thirty-nine thousand, three hundred ninety-seven".