1398963 has 4 divisors (see below), whose sum is σ = 1865288. Its totient is φ = 932640.

The previous prime is 1398911. The next prime is 1398967. The reversal of 1398963 is 3698931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3698931 = 3 ⋅1232977.

It is not a de Polignac number, because 1398963 - 2⁸ = 1398707 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398967) 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 in 3 ways as a sum of consecutive naturals, for example, 233158 + ... + 233163.

It is an arithmetic number, because the mean of its divisors is an integer number (466322).

2^1398963 is an apocalyptic number.

1398963 is a deficient number, since it is larger than the sum of its proper divisors (466325).

1398963 is an equidigital number, since it uses as much as digits as its factorization.

1398963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466324.

The product of its digits is 34992, while the sum is 39.

The square root of 1398963 is about 1182.7776629612. Note that the first 3 decimals coincide. The cubic root of 1398963 is about 111.8412664229.

Subtracting 1398963 from its reverse (3698931), we obtain a cube (2299968 = 132³).

The spelling of 1398963 in words is "one million, three hundred ninety-eight thousand, nine hundred sixty-three".