854147640 has 32 divisors (see below), whose sum is σ = 2562443280. Its totient is φ = 227772672.

The previous prime is 854147639. The next prime is 854147647. The reversal of 854147640 is 46741458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854147647) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3558829 + ... + 3559068.

Almost surely, 2^854147640 is an apocalyptic number.

It is an amenable number.

854147640 is an abundant number, since it is smaller than the sum of its proper divisors (1708295640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

854147640 is a wasteful number, since it uses less digits than its factorization.

854147640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117911 (or 7117907 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 854147640 is about 29225.8043516342. The cubic root of 854147640 is about 948.8064938126.

The spelling of 854147640 in words is "eight hundred fifty-four million, one hundred forty-seven thousand, six hundred forty".