894453840 has 420 divisors, whose sum is σ = 3638627604. Its totient is φ = 203793408.

The previous prime is 894453829. The next prime is 894453893. The reversal of 894453840 is 48354498.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 112021056 + 782432784 = 10584^2 + 27972^2 .

It is a tau number, because it is divible by the number of its divisors (420).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 2857524 + ... + 2857836.

Almost surely, 2^894453840 is an apocalyptic number.

894453840 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 894453840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1819313802).

894453840 is an abundant number, since it is smaller than the sum of its proper divisors (2744173764).

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

894453840 is a wasteful number, since it uses less digits than its factorization.

894453840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 894453840 is about 29907.4211526170. The cubic root of 894453840 is about 963.5020528257.

The spelling of 894453840 in words is "eight hundred ninety-four million, four hundred fifty-three thousand, eight hundred forty".