880431821 has 2 divisors, whose sum is σ = 880431822. Its totient is φ = 880431820.

The previous prime is 880431817. The next prime is 880431841. The reversal of 880431821 is 128134088.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729756196 + 150675625 = 27014^2 + 12275^2 .

It is a cyclic number.

It is not a de Polignac number, because 880431821 - 2² = 880431817 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (880431841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440215910 + 440215911.

It is an arithmetic number, because the mean of its divisors is an integer number (440215911).

Almost surely, 2^880431821 is an apocalyptic number.

It is an amenable number.

880431821 is a deficient number, since it is larger than the sum of its proper divisors (1).

880431821 is an equidigital number, since it uses as much as digits as its factorization.

880431821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 880431821 is about 29672.0713971910. The cubic root of 880431821 is about 958.4406909108.

The spelling of 880431821 in words is "eight hundred eighty million, four hundred thirty-one thousand, eight hundred twenty-one".