1389586441 has 2 divisors, whose sum is σ = 1389586442. Its totient is φ = 1389586440.

The previous prime is 1389586403. The next prime is 1389586447. The reversal of 1389586441 is 1446859831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1246090000 + 143496441 = 35300^2 + 11979^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389586441 - 2²³ = 1381197833 is a prime.

It is a super-2 number, since 2×1389586441² = 3861900954022092962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1389586447) 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, 694793220 + 694793221.

It is an arithmetic number, because the mean of its divisors is an integer number (694793221).

Almost surely, 2^1389586441 is an apocalyptic number.

It is an amenable number.

1389586441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389586441 is an equidigital number, since it uses as much as digits as its factorization.

1389586441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The square root of 1389586441 is about 37277.1570938557. The cubic root of 1389586441 is about 1115.9083379558.

The spelling of 1389586441 in words is "one billion, three hundred eighty-nine million, five hundred eighty-six thousand, four hundred forty-one".