1398497 has 2 divisors, whose sum is σ = 1398498. Its totient is φ = 1398496.

The previous prime is 1398493. The next prime is 1398517. The reversal of 1398497 is 7948931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1164241 + 234256 = 1079^2 + 484^2 .

It is an emirp because it is prime and its reverse (7948931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1398497 - 2² = 1398493 is a prime.

It is a super-3 number, since 3×1398497³ = 8205515533327528419, which contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1398493) 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, 699248 + 699249.

It is an arithmetic number, because the mean of its divisors is an integer number (699249).

2^1398497 is an apocalyptic number.

It is an amenable number.

1398497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398497 is an equidigital number, since it uses as much as digits as its factorization.

1398497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 1398497 is about 1182.5806526407. The cubic root of 1398497 is about 111.8288467906.

The spelling of 1398497 in words is "one million, three hundred ninety-eight thousand, four hundred ninety-seven".