894420364644 has 45 divisors (see below), whose sum is σ = 2338236011881. Its totient is φ = 298134447120.

The previous prime is 894420364633. The next prime is 894420364657. The reversal of 894420364644 is 446463024498.

It is a happy number.

The square root of 894420364644 is 945738.

It is a perfect power (a square), and thus also a powerful number.

894420364644 is a `hidden beast` number, since 89 + 442 + 0 + 3 + 64 + 64 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 887624011044 + 6796353600 = 942138^2 + 82440^2 .

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 16997014 + ... + 17049554.

Almost surely, 2^894420364644 is an apocalyptic number.

894420364644 is the 945738-th square number.

It is an amenable number.

894420364644 is an abundant number, since it is smaller than the sum of its proper divisors (1443815647237).

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

894420364644 is an frugal number, since it uses more digits than its factorization.

894420364644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105098 (or 52546 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 54.

The spelling of 894420364644 in words is "eight hundred ninety-four billion, four hundred twenty million, three hundred sixty-four thousand, six hundred forty-four".