1403489 has 2 divisors, whose sum is σ = 1403490. Its totient is φ = 1403488.

The previous prime is 1403461. The next prime is 1403491. The reversal of 1403489 is 9843041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1067089 + 336400 = 1033^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1403489 - 2¹² = 1399393 is a prime.

Together with 1403491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1403429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701744 + 701745.

It is an arithmetic number, because the mean of its divisors is an integer number (701745).

2^1403489 is an apocalyptic number.

It is an amenable number.

1403489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403489 is an equidigital number, since it uses as much as digits as its factorization.

1403489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1403489 is about 1184.6894107740. The cubic root of 1403489 is about 111.9617482042.

The spelling of 1403489 in words is "one million, four hundred three thousand, four hundred eighty-nine".