880721229 has 4 divisors (see below), whose sum is σ = 1174294976. Its totient is φ = 587147484.

The previous prime is 880721207. The next prime is 880721239. The reversal of 880721229 is 922127088.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 880721229 - 2⁵ = 880721197 is a prime.

It is a super-2 number, since 2×880721229² = 1551339766422540882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (880721239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146786869 + ... + 146786874.

It is an arithmetic number, because the mean of its divisors is an integer number (293573744).

Almost surely, 2^880721229 is an apocalyptic number.

It is an amenable number.

880721229 is a deficient number, since it is larger than the sum of its proper divisors (293573747).

880721229 is a wasteful number, since it uses less digits than its factorization.

880721229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293573746.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 880721229 is about 29676.9477709552. The cubic root of 880721229 is about 958.5456962085.

The spelling of 880721229 in words is "eight hundred eighty million, seven hundred twenty-one thousand, two hundred twenty-nine".