855779430 has 32 divisors (see below), whose sum is σ = 2240587008. Its totient is φ = 207461600.

The previous prime is 855779389. The next prime is 855779443. The reversal of 855779430 is 34977558.

It is a super-2 number, since 2×855779430² = 1464716865622249800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 855779430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296306 + ... + 1296965.

It is an arithmetic number, because the mean of its divisors is an integer number (70018344).

Almost surely, 2^855779430 is an apocalyptic number.

855779430 is an abundant number, since it is smaller than the sum of its proper divisors (1384807578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855779430 is a wasteful number, since it uses less digits than its factorization.

855779430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593292.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 855779430 is about 29253.7079701018. The cubic root of 855779430 is about 949.4103191849.

The spelling of 855779430 in words is "eight hundred fifty-five million, seven hundred seventy-nine thousand, four hundred thirty".