438480399 has 16 divisors (see below), whose sum is σ = 689715200. Its totient is φ = 242477280.

The previous prime is 438480397. The next prime is 438480401. The reversal of 438480399 is 993084834.

It is an interprime number because it is at equal distance from previous prime (438480397) and next prime (438480401).

It is not a de Polignac number, because 438480399 - 2¹ = 438480397 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438480391) 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, 336124 + ... + 337425.

It is an arithmetic number, because the mean of its divisors is an integer number (43107200).

Almost surely, 2^438480399 is an apocalyptic number.

438480399 is a deficient number, since it is larger than the sum of its proper divisors (251234801).

438480399 is a wasteful number, since it uses less digits than its factorization.

438480399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673590.

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 438480399 is about 20939.9235671958. The cubic root of 438480399 is about 759.7138806399.

The spelling of 438480399 in words is "four hundred thirty-eight million, four hundred eighty thousand, three hundred ninety-nine".