1379784589 has 2 divisors, whose sum is σ = 1379784590. Its totient is φ = 1379784588.

The previous prime is 1379784587. The next prime is 1379784629. The reversal of 1379784589 is 9854879731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1003812489 + 375972100 = 31683^2 + 19390^2 .

It is a cyclic number.

It is not a de Polignac number, because 1379784589 - 2¹ = 1379784587 is a prime.

Together with 1379784587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1379784587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689892294 + 689892295.

It is an arithmetic number, because the mean of its divisors is an integer number (689892295).

Almost surely, 2^1379784589 is an apocalyptic number.

It is an amenable number.

1379784589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379784589 is an equidigital number, since it uses as much as digits as its factorization.

1379784589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 61.

The square root of 1379784589 is about 37145.4517942641. The cubic root of 1379784589 is about 1113.2783497912.

The spelling of 1379784589 in words is "one billion, three hundred seventy-nine million, seven hundred eighty-four thousand, five hundred eighty-nine".