1079555921 has 2 divisors, whose sum is σ = 1079555922. Its totient is φ = 1079555920.

The previous prime is 1079555903. The next prime is 1079555929. The reversal of 1079555921 is 1295559701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1073479696 + 6076225 = 32764^2 + 2465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1079555921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1079555929) 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, 539777960 + 539777961.

It is an arithmetic number, because the mean of its divisors is an integer number (539777961).

Almost surely, 2^1079555921 is an apocalyptic number.

It is an amenable number.

1079555921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1079555921 is an equidigital number, since it uses as much as digits as its factorization.

1079555921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141750, while the sum is 44.

The square root of 1079555921 is about 32856.5963088084. The cubic root of 1079555921 is about 1025.8449256890.

The spelling of 1079555921 in words is "one billion, seventy-nine million, five hundred fifty-five thousand, nine hundred twenty-one".