871554946 has 36 divisors (see below), whose sum is σ = 1424458386. Its totient is φ = 398559360.

The previous prime is 871554941. The next prime is 871554967. The reversal of 871554946 is 649455178.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 380445025 + 491109921 = 19505^2 + 22161^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 871554946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871554941) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10500621 + ... + 10500703.

Almost surely, 2^871554946 is an apocalyptic number.

871554946 is a deficient number, since it is larger than the sum of its proper divisors (552903440).

871554946 is an equidigital number, since it uses as much as digits as its factorization.

871554946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 163 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The square root of 871554946 is about 29522.1094436018. The cubic root of 871554946 is about 955.2086734595.

The spelling of 871554946 in words is "eight hundred seventy-one million, five hundred fifty-four thousand, nine hundred forty-six".