1395739 has 2 divisors, whose sum is σ = 1395740. Its totient is φ = 1395738.

The previous prime is 1395697. The next prime is 1395743. The reversal of 1395739 is 9375931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1395739 - 2¹⁷ = 1264667 is a prime.

It is a super-2 number, since 2×1395739² = 3896174712242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1395698 and 1395707.

It is not a weakly prime, because it can be changed into another prime (1395749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697869 + 697870.

It is an arithmetic number, because the mean of its divisors is an integer number (697870).

2^1395739 is an apocalyptic number.

1395739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395739 is an equidigital number, since it uses as much as digits as its factorization.

1395739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 37.

The square root of 1395739 is about 1181.4139833268. The cubic root of 1395739 is about 111.7552852143.

The spelling of 1395739 in words is "one million, three hundred ninety-five thousand, seven hundred thirty-nine".