855471649 has 8 divisors (see below), whose sum is σ = 865658880. Its totient is φ = 845297376.

The previous prime is 855471641. The next prime is 855471653. The reversal of 855471649 is 946174558.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 855471649 - 2³ = 855471641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855471641) 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 7 ways as a sum of consecutive naturals, for example, 213664 + ... + 217630.

It is an arithmetic number, because the mean of its divisors is an integer number (108207360).

Almost surely, 2^855471649 is an apocalyptic number.

855471649 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

855471649 is a deficient number, since it is larger than the sum of its proper divisors (10187231).

855471649 is a wasteful number, since it uses less digits than its factorization.

855471649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479.

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

The square root of 855471649 is about 29248.4469502228. The cubic root of 855471649 is about 949.2964870901.

The spelling of 855471649 in words is "eight hundred fifty-five million, four hundred seventy-one thousand, six hundred forty-nine".