44487040639 has 2 divisors, whose sum is σ = 44487040640. Its totient is φ = 44487040638.

The previous prime is 44487040601. The next prime is 44487040691. The reversal of 44487040639 is 93604078444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44487040639 - 2²⁹ = 43950169727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44487040592 and 44487040601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44487040739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22243520319 + 22243520320.

It is an arithmetic number, because the mean of its divisors is an integer number (22243520320).

Almost surely, 2^44487040639 is an apocalyptic number.

44487040639 is a deficient number, since it is larger than the sum of its proper divisors (1).

44487040639 is an equidigital number, since it uses as much as digits as its factorization.

44487040639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 44487040639 in words is "forty-four billion, four hundred eighty-seven million, forty thousand, six hundred thirty-nine".