438558944669 has 16 divisors (see below), whose sum is σ = 462255448320. Its totient is φ = 415249929600.

The previous prime is 438558944617. The next prime is 438558944671. The reversal of 438558944669 is 966449855834.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 438558944669 - 2¹⁶ = 438558879133 is a prime.

It is a super-2 number, since 2×438558944669² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438558904669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12710489 + ... + 12744945.

It is an arithmetic number, because the mean of its divisors is an integer number (28890965520).

Almost surely, 2^438558944669 is an apocalyptic number.

It is an amenable number.

438558944669 is a deficient number, since it is larger than the sum of its proper divisors (23696503651).

438558944669 is a wasteful number, since it uses less digits than its factorization.

438558944669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40060.

The product of its digits is 895795200, while the sum is 71.

The spelling of 438558944669 in words is "four hundred thirty-eight billion, five hundred fifty-eight million, nine hundred forty-four thousand, six hundred sixty-nine".