438272498939 has 18 divisors (see below), whose sum is σ = 495242652996. Its totient is φ = 384634704720.

The previous prime is 438272498921. The next prime is 438272498953. The reversal of 438272498939 is 939894272834.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-438272498939 is a prime.

It is a super-2 number, since 2×438272498939² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438272498969) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 63671192 + ... + 63678074.

It is an arithmetic number, because the mean of its divisors is an integer number (27513480722).

Almost surely, 2^438272498939 is an apocalyptic number.

438272498939 is a deficient number, since it is larger than the sum of its proper divisors (56970154057).

438272498939 is an frugal number, since it uses more digits than its factorization.

438272498939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13835 (or 6923 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 68.

The spelling of 438272498939 in words is "four hundred thirty-eight billion, two hundred seventy-two million, four hundred ninety-eight thousand, nine hundred thirty-nine".