1939369 has 2 divisors, whose sum is σ = 1939370. Its totient is φ = 1939368.

The previous prime is 1939363. The next prime is 1939381. The reversal of 1939369 is 9639391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 34969 = 1380^2 + 187^2 .

It is a cyclic number.

It is not a de Polignac number, because 1939369 - 2¹³ = 1931177 is a prime.

It is a super-2 number, since 2×1939369² = 7522304236322, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1939363) 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, 969684 + 969685.

It is an arithmetic number, because the mean of its divisors is an integer number (969685).

2^1939369 is an apocalyptic number.

It is an amenable number.

1939369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1939369 is an equidigital number, since it uses as much as digits as its factorization.

1939369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39366, while the sum is 40.

The square root of 1939369 is about 1392.6122934974. The cubic root of 1939369 is about 124.7058470017.

The spelling of 1939369 in words is "one million, nine hundred thirty-nine thousand, three hundred sixty-nine".