839490851 has 8 divisors (see below), whose sum is σ = 888560400. Its totient is φ = 790909920.

The previous prime is 839490803. The next prime is 839490887. The reversal of 839490851 is 158094938.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-839490851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 839490796 and 839490805.

It is not an unprimeable number, because it can be changed into a prime (839496851) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 118616 + ... + 125493.

It is an arithmetic number, because the mean of its divisors is an integer number (111070050).

Almost surely, 2^839490851 is an apocalyptic number.

839490851 is a deficient number, since it is larger than the sum of its proper divisors (49069549).

839490851 is a wasteful number, since it uses less digits than its factorization.

839490851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244309.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 839490851 is about 28973.9685062299. The cubic root of 839490851 is about 943.3481218851.

The spelling of 839490851 in words is "eight hundred thirty-nine million, four hundred ninety thousand, eight hundred fifty-one".