1370979221 has 2 divisors, whose sum is σ = 1370979222. Its totient is φ = 1370979220.

The previous prime is 1370979199. The next prime is 1370979271. The reversal of 1370979221 is 1229790731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1260960100 + 110019121 = 35510^2 + 10489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370979221 - 2⁶ = 1370979157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1370979271) 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 as a sum of consecutive naturals, namely, 685489610 + 685489611.

It is an arithmetic number, because the mean of its divisors is an integer number (685489611).

Almost surely, 2^1370979221 is an apocalyptic number.

It is an amenable number.

1370979221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370979221 is an equidigital number, since it uses as much as digits as its factorization.

1370979221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 1370979221 is about 37026.7365696735. The cubic root of 1370979221 is about 1110.9050922137.

The spelling of 1370979221 in words is "one billion, three hundred seventy million, nine hundred seventy-nine thousand, two hundred twenty-one".