438906285 has 48 divisors (see below), whose sum is σ = 779950080. Its totient is φ = 228251520.

The previous prime is 438906233. The next prime is 438906301. The reversal of 438906285 is 582609834.

It is not a de Polignac number, because 438906285 - 2¹⁶ = 438840749 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 438906285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 347986 + ... + 349244.

It is an arithmetic number, because the mean of its divisors is an integer number (16248960).

Almost surely, 2^438906285 is an apocalyptic number.

438906285 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

438906285 is a deficient number, since it is larger than the sum of its proper divisors (341043795).

438906285 is a wasteful number, since it uses less digits than its factorization.

438906285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1455 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 438906285 is about 20950.0903339341. The cubic root of 438906285 is about 759.9597652984.

The spelling of 438906285 in words is "four hundred thirty-eight million, nine hundred six thousand, two hundred eighty-five".