891452852 has 6 divisors (see below), whose sum is σ = 1560042498. Its totient is φ = 445726424.

The previous prime is 891452843. The next prime is 891452857. The reversal of 891452852 is 258254198.

It can be written as a sum of positive squares in only one way, i.e., 729756196 + 161696656 = 27014^2 + 12716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891452857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111431603 + ... + 111431610.

It is an arithmetic number, because the mean of its divisors is an integer number (260007083).

Almost surely, 2^891452852 is an apocalyptic number.

It is an amenable number.

891452852 is a deficient number, since it is larger than the sum of its proper divisors (668589646).

891452852 is a wasteful number, since it uses less digits than its factorization.

891452852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222863217 (or 222863215 counting only the distinct ones).

The product of its digits is 230400, while the sum is 44.

The square root of 891452852 is about 29857.2077060130. The cubic root of 891452852 is about 962.4232947699.

The spelling of 891452852 in words is "eight hundred ninety-one million, four hundred fifty-two thousand, eight hundred fifty-two".