408761321 has 2 divisors, whose sum is σ = 408761322. Its totient is φ = 408761320.

The previous prime is 408761299. The next prime is 408761333. The reversal of 408761321 is 123167804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348232921 + 60528400 = 18661^2 + 7780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408761321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (408760321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204380660 + 204380661.

It is an arithmetic number, because the mean of its divisors is an integer number (204380661).

Almost surely, 2^408761321 is an apocalyptic number.

It is an amenable number.

408761321 is a deficient number, since it is larger than the sum of its proper divisors (1).

408761321 is an equidigital number, since it uses as much as digits as its factorization.

408761321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 408761321 is about 20217.8465965097. The cubic root of 408761321 is about 742.1469916308.

The spelling of 408761321 in words is "four hundred eight million, seven hundred sixty-one thousand, three hundred twenty-one".