880445509 has 4 divisors (see below), whose sum is σ = 880539660. Its totient is φ = 880351360.

The previous prime is 880445479. The next prime is 880445519. The reversal of 880445509 is 905544088.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 821968900 + 58476609 = 28670^2 + 7647^2 .

It is a cyclic number.

It is not a de Polignac number, because 880445509 - 2²³ = 872056901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (880445519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31282 + ... + 52339.

It is an arithmetic number, because the mean of its divisors is an integer number (220134915).

Almost surely, 2^880445509 is an apocalyptic number.

It is an amenable number.

880445509 is a deficient number, since it is larger than the sum of its proper divisors (94151).

880445509 is a wasteful number, since it uses less digits than its factorization.

880445509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94150.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 880445509 is about 29672.3020509026. The cubic root of 880445509 is about 958.4456578175.

The spelling of 880445509 in words is "eight hundred eighty million, four hundred forty-five thousand, five hundred nine".