438319897 has 4 divisors (see below), whose sum is σ = 438783696. Its totient is φ = 437856100.

The previous prime is 438319859. The next prime is 438319907. The reversal of 438319897 is 798913834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 438319897 - 2¹¹ = 438317849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438319837) 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, 230479 + ... + 232372.

It is an arithmetic number, because the mean of its divisors is an integer number (109695924).

Almost surely, 2^438319897 is an apocalyptic number.

It is an amenable number.

438319897 is a deficient number, since it is larger than the sum of its proper divisors (463799).

438319897 is an equidigital number, since it uses as much as digits as its factorization.

438319897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463798.

The product of its digits is 1306368, while the sum is 52.

The square root of 438319897 is about 20936.0907764559. The cubic root of 438319897 is about 759.6211737379.

The spelling of 438319897 in words is "four hundred thirty-eight million, three hundred nineteen thousand, eight hundred ninety-seven".