859433381 has 4 divisors (see below), whose sum is σ = 859651872. Its totient is φ = 859214892.

The previous prime is 859433359. The next prime is 859433383. The reversal of 859433381 is 183334958.

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 a de Polignac number, because none of the positive numbers 2^k-859433381 is a prime.

It is a super-2 number, since 2×859433381² = 1477251472754182322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859433383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103235 + ... + 111248.

It is an arithmetic number, because the mean of its divisors is an integer number (214912968).

Almost surely, 2^859433381 is an apocalyptic number.

It is an amenable number.

859433381 is a deficient number, since it is larger than the sum of its proper divisors (218491).

859433381 is a wasteful number, since it uses less digits than its factorization.

859433381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218490.

The product of its digits is 311040, while the sum is 44.

The square root of 859433381 is about 29316.0942316674. The cubic root of 859433381 is about 950.7596439312.

The spelling of 859433381 in words is "eight hundred fifty-nine million, four hundred thirty-three thousand, three hundred eighty-one".