1398541 has 2 divisors, whose sum is σ = 1398542. Its totient is φ = 1398540.

The previous prime is 1398521. The next prime is 1398557. The reversal of 1398541 is 1458931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1334025 + 64516 = 1155^2 + 254^2 .

It is a cyclic number.

It is not a de Polignac number, because 1398541 - 2⁷ = 1398413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398521) 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, 699270 + 699271.

It is an arithmetic number, because the mean of its divisors is an integer number (699271).

2^1398541 is an apocalyptic number.

It is an amenable number.

1398541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398541 is an equidigital number, since it uses as much as digits as its factorization.

1398541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 1398541 is about 1182.5992558766. The cubic root of 1398541 is about 111.8300195777.

The spelling of 1398541 in words is "one million, three hundred ninety-eight thousand, five hundred forty-one".