1939673 has 2 divisors, whose sum is σ = 1939674. Its totient is φ = 1939672.

The previous prime is 1939657. The next prime is 1939681. The reversal of 1939673 is 3769391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1570009 + 369664 = 1253^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 1939673 - 2⁴ = 1939657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1939603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969836 + 969837.

It is an arithmetic number, because the mean of its divisors is an integer number (969837).

2^1939673 is an apocalyptic number.

It is an amenable number.

1939673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1939673 is an equidigital number, since it uses as much as digits as its factorization.

1939673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 38.

The square root of 1939673 is about 1392.7214366125. The cubic root of 1939673 is about 124.7123626256.

The spelling of 1939673 in words is "one million, nine hundred thirty-nine thousand, six hundred seventy-three".