438922885 has 4 divisors (see below), whose sum is σ = 526707468. Its totient is φ = 351138304.

The previous prime is 438922879. The next prime is 438922903. The reversal of 438922885 is 588229834.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51581124 + 387341761 = 7182^2 + 19681^2 .

It is a cyclic number.

It is not a de Polignac number, because 438922885 - 2¹⁷ = 438791813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43892284 + ... + 43892293.

It is an arithmetic number, because the mean of its divisors is an integer number (131676867).

Almost surely, 2^438922885 is an apocalyptic number.

It is an amenable number.

438922885 is a deficient number, since it is larger than the sum of its proper divisors (87784583).

438922885 is an equidigital number, since it uses as much as digits as its factorization.

438922885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87784582.

The product of its digits is 1105920, while the sum is 49.

The square root of 438922885 is about 20950.4865098642. The cubic root of 438922885 is about 759.9693460628.

The spelling of 438922885 in words is "four hundred thirty-eight million, nine hundred twenty-two thousand, eight hundred eighty-five".