853404388 has 6 divisors (see below), whose sum is σ = 1493457686. Its totient is φ = 426702192.

The previous prime is 853404367. The next prime is 853404407. The reversal of 853404388 is 883404358.

It can be written as a sum of positive squares in only one way, i.e., 480837184 + 372567204 = 21928^2 + 19302^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106675545 + ... + 106675552.

Almost surely, 2^853404388 is an apocalyptic number.

It is an amenable number.

853404388 is a deficient number, since it is larger than the sum of its proper divisors (640053298).

853404388 is a wasteful number, since it uses less digits than its factorization.

853404388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213351101 (or 213351099 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 853404388 is about 29213.0859034098. The cubic root of 853404388 is about 948.5312069113.

The spelling of 853404388 in words is "eight hundred fifty-three million, four hundred four thousand, three hundred eighty-eight".