438789105 has 24 divisors (see below), whose sum is σ = 781126632. Its totient is φ = 227695104.

The previous prime is 438789079. The next prime is 438789137. The reversal of 438789105 is 501987834.

It can be written as a sum of positive squares in 4 ways, for example, as 62157456 + 376631649 = 7884^2 + 19407^2 .

It is not a de Polignac number, because 438789105 - 2⁹ = 438788593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130104 + ... + 133433.

It is an arithmetic number, because the mean of its divisors is an integer number (32546943).

Almost surely, 2^438789105 is an apocalyptic number.

438789105 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

438789105 is a deficient number, since it is larger than the sum of its proper divisors (342337527).

438789105 is a wasteful number, since it uses less digits than its factorization.

438789105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263585 (or 263582 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 438789105 is about 20947.2935005933. The cubic root of 438789105 is about 759.8921274643.

The spelling of 438789105 in words is "four hundred thirty-eight million, seven hundred eighty-nine thousand, one hundred five".