438198399 has 6 divisors (see below), whose sum is σ = 632953256. Its totient is φ = 292132260.

The previous prime is 438198391. The next prime is 438198403. The reversal of 438198399 is 993891834.

It is not a de Polignac number, because 438198399 - 2³ = 438198391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438198391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24344347 + ... + 24344364.

Almost surely, 2^438198399 is an apocalyptic number.

438198399 is a deficient number, since it is larger than the sum of its proper divisors (194754857).

438198399 is a wasteful number, since it uses less digits than its factorization.

438198399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48688717 (or 48688714 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 438198399 is about 20933.1889352769. The cubic root of 438198399 is about 759.5509807253.

The spelling of 438198399 in words is "four hundred thirty-eight million, one hundred ninety-eight thousand, three hundred ninety-nine".