1399098281860 has 24 divisors (see below), whose sum is σ = 3039420406680. Its totient is φ = 540341405184.

The previous prime is 1399098281857. The next prime is 1399098281869. The reversal of 1399098281860 is 681828909931.

It can be written as a sum of positive squares in 4 ways, for example, as 56545035264 + 1342553246596 = 237792^2 + 1158686^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1399098281792 and 1399098281801.

It is not an unprimeable number, because it can be changed into a prime (1399098281869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1206118629 + ... + 1206119788.

It is an arithmetic number, because the mean of its divisors is an integer number (126642516945).

Almost surely, 2^{1399098281860} is an apocalyptic number.

1399098281860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1399098281860 is an abundant number, since it is smaller than the sum of its proper divisors (1640322124820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1399098281860 is a wasteful number, since it uses less digits than its factorization.

1399098281860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412238455 (or 2412238453 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 64.

The spelling of 1399098281860 in words is "one trillion, three hundred ninety-nine billion, ninety-eight million, two hundred eighty-one thousand, eight hundred sixty".