870001444 has 24 divisors (see below), whose sum is σ = 1662085880. Its totient is φ = 396036864.

The previous prime is 870001441. The next prime is 870001493. The reversal of 870001444 is 444100078.

It can be written as a sum of positive squares in 4 ways, for example, as 19695844 + 850305600 = 4438^2 + 29160^2 .

It is not an unprimeable number, because it can be changed into a prime (870001441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110799 + ... + 118390.

Almost surely, 2^870001444 is an apocalyptic number.

It is an amenable number.

870001444 is a deficient number, since it is larger than the sum of its proper divisors (792084436).

870001444 is a wasteful number, since it uses less digits than its factorization.

870001444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229279 (or 229277 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 870001444 is about 29495.7868855876. The cubic root of 870001444 is about 954.6407990968.

The spelling of 870001444 in words is "eight hundred seventy million, one thousand, four hundred forty-four".