321479077 has 2 divisors, whose sum is σ = 321479078. Its totient is φ = 321479076.

The previous prime is 321479047. The next prime is 321479099. The reversal of 321479077 is 770974123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294946276 + 26532801 = 17174^2 + 5151^2 .

It is a cyclic number.

It is not a de Polignac number, because 321479077 - 2¹⁵ = 321446309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321479017) 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 as a sum of consecutive naturals, namely, 160739538 + 160739539.

It is an arithmetic number, because the mean of its divisors is an integer number (160739539).

Almost surely, 2^321479077 is an apocalyptic number.

It is an amenable number.

321479077 is a deficient number, since it is larger than the sum of its proper divisors (1).

321479077 is an equidigital number, since it uses as much as digits as its factorization.

321479077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 321479077 is about 17929.8376177811. The cubic root of 321479077 is about 685.0425867284.

The spelling of 321479077 in words is "three hundred twenty-one million, four hundred seventy-nine thousand, seventy-seven".