856632338 has 4 divisors (see below), whose sum is σ = 1284948510. Its totient is φ = 428316168.

The previous prime is 856632323. The next prime is 856632353. The reversal of 856632338 is 833236658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 833236658 = 2 ⋅416618329.

It is an interprime number because it is at equal distance from previous prime (856632323) and next prime (856632353).

It can be written as a sum of positive squares in only one way, i.e., 839434729 + 17197609 = 28973^2 + 4147^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214158083 + ... + 214158086.

Almost surely, 2^856632338 is an apocalyptic number.

856632338 is a deficient number, since it is larger than the sum of its proper divisors (428316172).

856632338 is a wasteful number, since it uses less digits than its factorization.

856632338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428316171.

The product of its digits is 622080, while the sum is 44.

The square root of 856632338 is about 29268.2821156282. The cubic root of 856632338 is about 949.7256227015.

It can be divided in two parts, 8566 and 32338, that added together give a palindrome (40904).

The spelling of 856632338 in words is "eight hundred fifty-six million, six hundred thirty-two thousand, three hundred thirty-eight".