899620992 has 224 divisors, whose sum is σ = 2782690560. Its totient is φ = 289267200.

The previous prime is 899620979. The next prime is 899620999. The reversal of 899620992 is 299026998.

899620992 is a `hidden beast` number, since 8 + 9 + 9 + 620 + 9 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (899620999) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2892517 + ... + 2892827.

Almost surely, 2^899620992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899620992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1391345280).

899620992 is an abundant number, since it is smaller than the sum of its proper divisors (1883069568).

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

899620992 is an equidigital number, since it uses as much as digits as its factorization.

899620992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 899620992 is about 29993.6825348272. The cubic root of 899620992 is about 965.3538366133.

The spelling of 899620992 in words is "eight hundred ninety-nine million, six hundred twenty thousand, nine hundred ninety-two".