438805121 has 4 divisors (see below), whose sum is σ = 438860100. Its totient is φ = 438750144.

The previous prime is 438805079. The next prime is 438805123. The reversal of 438805121 is 121508834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121508834 = 2 ⋅60754417.

It can be written as a sum of positive squares in 2 ways, for example, as 308388721 + 130416400 = 17561^2 + 11420^2 .

It is a cyclic number.

It is not a de Polignac number, because 438805121 - 2¹⁴ = 438788737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438805123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12956 + ... + 32333.

It is an arithmetic number, because the mean of its divisors is an integer number (109715025).

Almost surely, 2^438805121 is an apocalyptic number.

It is an amenable number.

438805121 is a deficient number, since it is larger than the sum of its proper divisors (54979).

438805121 is an equidigital number, since it uses as much as digits as its factorization.

438805121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54978.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 438805121 is about 20947.6757899295. The cubic root of 438805121 is about 759.9013728201.

The spelling of 438805121 in words is "four hundred thirty-eight million, eight hundred five thousand, one hundred twenty-one".