899861478 has 8 divisors (see below), whose sum is σ = 1799722968. Its totient is φ = 299953824.

The previous prime is 899861471. The next prime is 899861491. The reversal of 899861478 is 874168998.

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

899861478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899861471) 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 3 ways as a sum of consecutive naturals, for example, 74988451 + ... + 74988462.

It is an arithmetic number, because the mean of its divisors is an integer number (224965371).

Almost surely, 2^899861478 is an apocalyptic number.

899861478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

899861478 is a wasteful number, since it uses less digits than its factorization.

899861478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149976918.

The product of its digits is 6967296, while the sum is 60.

The square root of 899861478 is about 29997.6912111582. The cubic root of 899861478 is about 965.4398481676.

The spelling of 899861478 in words is "eight hundred ninety-nine million, eight hundred sixty-one thousand, four hundred seventy-eight".