1390875 has 16 divisors (see below), whose sum is σ = 2315040. Its totient is φ = 741600.

The previous prime is 1390859. The next prime is 1390891. The reversal of 1390875 is 5780931.

It is an interprime number because it is at equal distance from previous prime (1390859) and next prime (1390891).

It is not a de Polignac number, because 1390875 - 2⁴ = 1390859 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1480 + ... + 2229.

It is an arithmetic number, because the mean of its divisors is an integer number (144690).

2^1390875 is an apocalyptic number.

1390875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1390875 is a deficient number, since it is larger than the sum of its proper divisors (924165).

1390875 is an equidigital number, since it uses as much as digits as its factorization.

1390875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727 (or 3717 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1390875 is about 1179.3536365315. The cubic root of 1390875 is about 111.6253157455.

The spelling of 1390875 in words is "one million, three hundred ninety thousand, eight hundred seventy-five".