442925936639 has 4 divisors (see below), whose sum is σ = 443610521424. Its totient is φ = 442241351856.

The previous prime is 442925936617. The next prime is 442925936681. The reversal of 442925936639 is 936639529244.

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

It is a cyclic number.

It is not a de Polignac number, because 442925936639 - 2¹⁶ = 442925871103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442925936839) 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, 342291422 + ... + 342292715.

It is an arithmetic number, because the mean of its divisors is an integer number (110902630356).

Almost surely, 2^442925936639 is an apocalyptic number.

442925936639 is a deficient number, since it is larger than the sum of its proper divisors (684584785).

442925936639 is an equidigital number, since it uses as much as digits as its factorization.

442925936639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684584784.

The product of its digits is 75582720, while the sum is 62.

The spelling of 442925936639 in words is "four hundred forty-two billion, nine hundred twenty-five million, nine hundred thirty-six thousand, six hundred thirty-nine".