899977245440 has 216 divisors, whose sum is σ = 2700583205040. Its totient is φ = 284827705344.

The previous prime is 899977245367. The next prime is 899977245481. The reversal of 899977245440 is 44542779998.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 263471 + ... + 1367249.

Almost surely, 2^899977245440 is an apocalyptic number.

899977245440 is a gapful number since it is divisible by the number (80) 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 899977245440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350291602520).

899977245440 is an abundant number, since it is smaller than the sum of its proper divisors (1800605959600).

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

899977245440 is a wasteful number, since it uses less digits than its factorization.

899977245440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103827 (or 1103806 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 68.

The spelling of 899977245440 in words is "eight hundred ninety-nine billion, nine hundred seventy-seven million, two hundred forty-five thousand, four hundred forty".