1407389 has 2 divisors, whose sum is σ = 1407390. Its totient is φ = 1407388.

The previous prime is 1407383. The next prime is 1407391. The reversal of 1407389 is 9837041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 466489 = 970^2 + 683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1407389 is a prime.

Together with 1407391, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1407383) 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, 703694 + 703695.

It is an arithmetic number, because the mean of its divisors is an integer number (703695).

2^1407389 is an apocalyptic number.

It is an amenable number.

1407389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1407389 is an equidigital number, since it uses as much as digits as its factorization.

1407389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1407389 is about 1186.3342699256. The cubic root of 1407389 is about 112.0653583234.

The spelling of 1407389 in words is "one million, four hundred seven thousand, three hundred eighty-nine".