438140159 has 4 divisors (see below), whose sum is σ = 438724320. Its totient is φ = 437556000.

The previous prime is 438140117. The next prime is 438140177. The reversal of 438140159 is 951041834.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 438140159 - 2¹² = 438136063 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 (438140959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290954 + ... + 292455.

It is an arithmetic number, because the mean of its divisors is an integer number (109681080).

Almost surely, 2^438140159 is an apocalyptic number.

438140159 is a deficient number, since it is larger than the sum of its proper divisors (584161).

438140159 is an equidigital number, since it uses as much as digits as its factorization.

438140159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584160.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 438140159 is about 20931.7977966538. The cubic root of 438140159 is about 759.5173291426.

The spelling of 438140159 in words is "four hundred thirty-eight million, one hundred forty thousand, one hundred fifty-nine".