899244864 has 252 divisors, whose sum is σ = 3032503968. Its totient is φ = 254016000.

The previous prime is 899244851. The next prime is 899244881. The reversal of 899244864 is 468442998.

It is a tau number, because it is divible by the number of its divisors (252).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 899244864.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 4261719 + ... + 4261929.

Almost surely, 2^899244864 is an apocalyptic number.

899244864 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899244864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516251984).

899244864 is an abundant number, since it is smaller than the sum of its proper divisors (2133259104).

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

899244864 is a wasteful number, since it uses less digits than its factorization.

899244864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 374 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 899244864 is about 29987.4117589364. The cubic root of 899244864 is about 965.2192809779.

The spelling of 899244864 in words is "eight hundred ninety-nine million, two hundred forty-four thousand, eight hundred sixty-four".