1394909 has 2 divisors, whose sum is σ = 1394910. Its totient is φ = 1394908.

The previous prime is 1394893. The next prime is 1394917. The reversal of 1394909 is 9094931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1387684 + 7225 = 1178^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 1394909 - 2⁴ = 1394893 is a prime.

It is a super-2 number, since 2×1394909² = 3891542236562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1394989) 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, 697454 + 697455.

It is an arithmetic number, because the mean of its divisors is an integer number (697455).

2^1394909 is an apocalyptic number.

It is an amenable number.

1394909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394909 is an equidigital number, since it uses as much as digits as its factorization.

1394909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 1394909 is about 1181.0626571016. The cubic root of 1394909 is about 111.7331284263.

The spelling of 1394909 in words is "one million, three hundred ninety-four thousand, nine hundred nine".