1393254451044 has 27 divisors (see below), whose sum is σ = 3521855542387. Its totient is φ = 464415789624.

The previous prime is 1393254451037. The next prime is 1393254451073. The reversal of 1393254451044 is 4401544523931.

It is a happy number.

The square root of 1393254451044 is 1180362.

It is a perfect power (a square), and thus also a powerful number.

1393254451044 is a `hidden beast` number, since 1 + 3 + 93 + 2 + 5 + 4 + 4 + 510 + 44 = 666.

It is a super-3 number, since 3×1393254451044³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6983809 + ... + 7180535.

Almost surely, 2^{1393254451044} is an apocalyptic number.

1393254451044 is the 1180362-nd square number.

It is an amenable number.

1393254451044 is an abundant number, since it is smaller than the sum of its proper divisors (2128601091343).

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

1393254451044 is an frugal number, since it uses more digits than its factorization.

1393254451044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393464 (or 196732 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

Adding to 1393254451044 its reverse (4401544523931), we get a palindrome (5794798974975).

The spelling of 1393254451044 in words is "one trillion, three hundred ninety-three billion, two hundred fifty-four million, four hundred fifty-one thousand, forty-four".