438779660248 has 16 divisors (see below), whose sum is σ = 851081238000. Its totient is φ = 211824663456.

The previous prime is 438779660243. The next prime is 438779660257. The reversal of 438779660248 is 842066977834.

It is a super-2 number, since 2×438779660248² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 438779660248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438779660243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945645588 + ... + 945646051.

It is an arithmetic number, because the mean of its divisors is an integer number (53192577375).

Almost surely, 2^438779660248 is an apocalyptic number.

It is an amenable number.

438779660248 is a deficient number, since it is larger than the sum of its proper divisors (412301577752).

438779660248 is a wasteful number, since it uses less digits than its factorization.

438779660248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891291674 (or 1891291670 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 64.

The spelling of 438779660248 in words is "four hundred thirty-eight billion, seven hundred seventy-nine million, six hundred sixty thousand, two hundred forty-eight".