440261384513 has 4 divisors (see below), whose sum is σ = 442183923540. Its totient is φ = 438338845488.

The previous prime is 440261384501. The next prime is 440261384531. The reversal of 440261384513 is 315483162044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 431875037584 + 8386346929 = 657172^2 + 91577^2 .

It is a cyclic number.

It is not a de Polignac number, because 440261384513 - 2¹⁰ = 440261383489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440261384113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961269170 + ... + 961269627.

It is an arithmetic number, because the mean of its divisors is an integer number (110545980885).

Almost surely, 2^440261384513 is an apocalyptic number.

It is an amenable number.

440261384513 is a deficient number, since it is larger than the sum of its proper divisors (1922539027).

440261384513 is a wasteful number, since it uses less digits than its factorization.

440261384513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922539026.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 440261384513 in words is "four hundred forty billion, two hundred sixty-one million, three hundred eighty-four thousand, five hundred thirteen".