853838890 has 48 divisors (see below), whose sum is σ = 1657563264. Its totient is φ = 316066080.

The previous prime is 853838863. The next prime is 853838903. The reversal of 853838890 is 98838358.

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 in 23 ways as a sum of consecutive naturals, for example, 219099 + ... + 222961.

It is an arithmetic number, because the mean of its divisors is an integer number (34532568).

Almost surely, 2^853838890 is an apocalyptic number.

853838890 is a deficient number, since it is larger than the sum of its proper divisors (803724374).

853838890 is a wasteful number, since it uses less digits than its factorization.

853838890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955 (or 3924 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 853838890 is about 29220.5217270329. The cubic root of 853838890 is about 948.6921578769.

The spelling of 853838890 in words is "eight hundred fifty-three million, eight hundred thirty-eight thousand, eight hundred ninety".