1393744440507 has 8 divisors (see below), whose sum is σ = 1956132548160. Its totient is φ = 880259646600.

The previous prime is 1393744440463. The next prime is 1393744440521. The reversal of 1393744440507 is 7050444473931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1393744440507 - 2⁷ = 1393744440379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1393744440507.

It is not an unprimeable number, because it can be changed into a prime (1393744440577) 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, 12225828369 + ... + 12225828482.

It is an arithmetic number, because the mean of its divisors is an integer number (244516568520).

Almost surely, 2^{1393744440507} is an apocalyptic number.

1393744440507 is a deficient number, since it is larger than the sum of its proper divisors (562388107653).

1393744440507 is a wasteful number, since it uses less digits than its factorization.

1393744440507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24451656873.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 1393744440507 in words is "one trillion, three hundred ninety-three billion, seven hundred forty-four million, four hundred forty thousand, five hundred seven".