853979890 has 32 divisors (see below), whose sum is σ = 1619663040. Its totient is φ = 323294400.

The previous prime is 853979879. The next prime is 853979891. The reversal of 853979890 is 98979358.

It is not an unprimeable number, because it can be changed into a prime (853979891) 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 15 ways as a sum of consecutive naturals, for example, 297060 + ... + 299920.

It is an arithmetic number, because the mean of its divisors is an integer number (50614470).

Almost surely, 2^853979890 is an apocalyptic number.

853979890 is a deficient number, since it is larger than the sum of its proper divisors (765683150).

853979890 is a wasteful number, since it uses less digits than its factorization.

853979890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4458.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The square root of 853979890 is about 29222.9343153627. The cubic root of 853979890 is about 948.7443762494.

The spelling of 853979890 in words is "eight hundred fifty-three million, nine hundred seventy-nine thousand, eight hundred ninety".