438289285 has 16 divisors (see below), whose sum is σ = 601425792. Its totient is φ = 300369600.

The previous prime is 438289279. The next prime is 438289289. The reversal of 438289285 is 582982834.

It is a happy number.

It is not a de Polignac number, because 438289285 - 2⁷ = 438289157 is a prime.

It is a super-2 number, since 2×438289285² = 384194994691622450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438289289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105090 + ... + 109180.

It is an arithmetic number, because the mean of its divisors is an integer number (37589112).

Almost surely, 2^438289285 is an apocalyptic number.

It is an amenable number.

438289285 is a deficient number, since it is larger than the sum of its proper divisors (163136507).

438289285 is a wasteful number, since it uses less digits than its factorization.

438289285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164.

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

The square root of 438289285 is about 20935.3596816487. The cubic root of 438289285 is about 759.6034894964.

The spelling of 438289285 in words is "four hundred thirty-eight million, two hundred eighty-nine thousand, two hundred eighty-five".