880390081 has 2 divisors, whose sum is σ = 880390082. Its totient is φ = 880390080.

The previous prime is 880390073. The next prime is 880390097. The reversal of 880390081 is 180093088.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 853516225 + 26873856 = 29215^2 + 5184^2 .

It is a cyclic number.

It is not a de Polignac number, because 880390081 - 2³ = 880390073 is a prime.

It is a super-2 number, since 2×880390081² = 1550173389446373122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 880390081.

It is not a weakly prime, because it can be changed into another prime (880390051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440195040 + 440195041.

It is an arithmetic number, because the mean of its divisors is an integer number (440195041).

Almost surely, 2^880390081 is an apocalyptic number.

It is an amenable number.

880390081 is a deficient number, since it is larger than the sum of its proper divisors (1).

880390081 is an equidigital number, since it uses as much as digits as its factorization.

880390081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 880390081 is about 29671.3680338470. The cubic root of 880390081 is about 958.4255445755.

The spelling of 880390081 in words is "eight hundred eighty million, three hundred ninety thousand, eighty-one".