870044081 has 2 divisors, whose sum is σ = 870044082. Its totient is φ = 870044080.

The previous prime is 870044059. The next prime is 870044093. The reversal of 870044081 is 180440078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 651270400 + 218773681 = 25520^2 + 14791^2 .

It is a cyclic number.

It is not a de Polignac number, because 870044081 - 2⁶ = 870044017 is a prime.

It is a super-2 number, since 2×870044081² = 1513953405766269122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (870040081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435022040 + 435022041.

It is an arithmetic number, because the mean of its divisors is an integer number (435022041).

Almost surely, 2^870044081 is an apocalyptic number.

It is an amenable number.

870044081 is a deficient number, since it is larger than the sum of its proper divisors (1).

870044081 is an equidigital number, since it uses as much as digits as its factorization.

870044081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 870044081 is about 29496.5096409728. The cubic root of 870044081 is about 954.6563938429.

The spelling of 870044081 in words is "eight hundred seventy million, forty-four thousand, eighty-one".