438349399 has 8 divisors (see below), whose sum is σ = 462734640. Its totient is φ = 414095616.

The previous prime is 438349391. The next prime is 438349423. The reversal of 438349399 is 993943834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 438349399 - 2³ = 438349391 is a prime.

It is a super-2 number, since 2×438349399² = 384300391207322402, 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 (438349391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25972 + ... + 39385.

It is an arithmetic number, because the mean of its divisors is an integer number (57841830).

Almost surely, 2^438349399 is an apocalyptic number.

438349399 is a deficient number, since it is larger than the sum of its proper divisors (24385241).

438349399 is a wasteful number, since it uses less digits than its factorization.

438349399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65729.

The product of its digits is 2519424, while the sum is 52.

The square root of 438349399 is about 20936.7953373958. The cubic root of 438349399 is about 759.6382159646.

The spelling of 438349399 in words is "four hundred thirty-eight million, three hundred forty-nine thousand, three hundred ninety-nine".