1398875 has 24 divisors (see below), whose sum is σ = 1901952. Its totient is φ = 1026000.

The previous prime is 1398871. The next prime is 1398911. The reversal of 1398875 is 5788931.

It is a happy number.

It is not a de Polignac number, because 1398875 - 2² = 1398871 is a prime.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (60480) is a multiple of the sum of its prime factors (84).

It is not an unprimeable number, because it can be changed into a prime (1398871) 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 23 ways as a sum of consecutive naturals, for example, 45110 + ... + 45140.

It is an arithmetic number, because the mean of its divisors is an integer number (79248).

2^1398875 is an apocalyptic number.

1398875 is a deficient number, since it is larger than the sum of its proper divisors (503077).

1398875 is an equidigital number, since it uses as much as digits as its factorization.

1398875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 55 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 1398875 is about 1182.7404618089. The cubic root of 1398875 is about 111.8389212959.

The spelling of 1398875 in words is "one million, three hundred ninety-eight thousand, eight hundred seventy-five".