839490855 has 32 divisors (see below), whose sum is σ = 1625370624. Its totient is φ = 361191936.

The previous prime is 839490803. The next prime is 839490887. The reversal of 839490855 is 558094938.

It is a happy number.

It is not a de Polignac number, because 839490855 - 2⁶ = 839490791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 839490798 and 839490807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233367 + ... + 236936.

It is an arithmetic number, because the mean of its divisors is an integer number (50792832).

Almost surely, 2^839490855 is an apocalyptic number.

839490855 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

839490855 is a deficient number, since it is larger than the sum of its proper divisors (785879769).

839490855 is a wasteful number, since it uses less digits than its factorization.

839490855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470335.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The square root of 839490855 is about 28973.9685752573. The cubic root of 839490855 is about 943.3481233834.

The spelling of 839490855 in words is "eight hundred thirty-nine million, four hundred ninety thousand, eight hundred fifty-five".