438286466 has 4 divisors (see below), whose sum is σ = 657429702. Its totient is φ = 219143232.

The previous prime is 438286451. The next prime is 438286477. The reversal of 438286466 is 664682834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 664682834 = 2 ⋅332341417.

It can be written as a sum of positive squares in only one way, i.e., 420045025 + 18241441 = 20495^2 + 4271^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 438286466.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109571615 + ... + 109571618.

Almost surely, 2^438286466 is an apocalyptic number.

438286466 is a deficient number, since it is larger than the sum of its proper divisors (219143236).

438286466 is a wasteful number, since it uses less digits than its factorization.

438286466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219143235.

The product of its digits is 1327104, while the sum is 47.

The square root of 438286466 is about 20935.2923552550. The cubic root of 438286466 is about 759.6018609474.

The spelling of 438286466 in words is "four hundred thirty-eight million, two hundred eighty-six thousand, four hundred sixty-six".