898744195440 has 480 divisors, whose sum is σ = 3834650566656. Its totient is φ = 183507793920.

The previous prime is 898744195373. The next prime is 898744195483. The reversal of 898744195440 is 44591447898.

898744195440 is a `hidden beast` number, since 8 + 9 + 8 + 74 + 4 + 19 + 544 + 0 = 666.

It is a super-2 number, since 2×898744195440² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1809877 + ... + 2252363.

Almost surely, 2^898744195440 is an apocalyptic number.

898744195440 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 898744195440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1917325283328).

898744195440 is an abundant number, since it is smaller than the sum of its proper divisors (2935906371216).

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

898744195440 is a wasteful number, since it uses less digits than its factorization.

898744195440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442557 (or 442548 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 898744195440 in words is "eight hundred ninety-eight billion, seven hundred forty-four million, one hundred ninety-five thousand, four hundred forty".