438197667 has 8 divisors (see below), whose sum is σ = 584463360. Its totient is φ = 292031880.

The previous prime is 438197663. The next prime is 438197671. The reversal of 438197667 is 766791834.

It is an interprime number because it is at equal distance from previous prime (438197663) and next prime (438197671).

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

It is not a de Polignac number, because 438197667 - 2² = 438197663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438197663) 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, 14059 + ... + 32772.

It is an arithmetic number, because the mean of its divisors is an integer number (73057920).

Almost surely, 2^438197667 is an apocalyptic number.

438197667 is a deficient number, since it is larger than the sum of its proper divisors (146265693).

438197667 is a wasteful number, since it uses less digits than its factorization.

438197667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49953.

The product of its digits is 1524096, while the sum is 51.

The square root of 438197667 is about 20933.1714510726. The cubic root of 438197667 is about 759.5505577878.

The spelling of 438197667 in words is "four hundred thirty-eight million, one hundred ninety-seven thousand, six hundred sixty-seven".