1393984391240 has 64 divisors (see below), whose sum is σ = 3606522399360. Its totient is φ = 475005358080.

The previous prime is 1393984391221. The next prime is 1393984391257. The reversal of 1393984391240 is 421934893931.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15225881 + ... + 15317160.

It is an arithmetic number, because the mean of its divisors is an integer number (56351912490).

Almost surely, 2^{1393984391240} is an apocalyptic number.

1393984391240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1393984391240 is an abundant number, since it is smaller than the sum of its proper divisors (2212538008120).

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

1393984391240 is a wasteful number, since it uses less digits than its factorization.

1393984391240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30543222 (or 30543218 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 56.

The spelling of 1393984391240 in words is "one trillion, three hundred ninety-three billion, nine hundred eighty-four million, three hundred ninety-one thousand, two hundred forty".