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1395983 is a prime number
BaseRepresentation
bin101010100110100001111
32121220221002
411110310033
5324132413
645530515
714602631
oct5246417
92556832
101395983
11873906
12573a3b
1339b534
14284a51
151c8958
hex154d0f

1395983 has 2 divisors, whose sum is σ = 1395984. Its totient is φ = 1395982.

The previous prime is 1395943. The next prime is 1395991. The reversal of 1395983 is 3895931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1395983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1395923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697991 + 697992.

It is an arithmetic number, because the mean of its divisors is an integer number (697992).

21395983 is an apocalyptic number.

1395983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395983 is an equidigital number, since it uses as much as digits as its factorization.

1395983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 1395983 is about 1181.5172449017. The cubic root of 1395983 is about 111.7617971053.

The spelling of 1395983 in words is "one million, three hundred ninety-five thousand, nine hundred eighty-three".