1399975 has 12 divisors (see below), whose sum is σ = 1796760. Its totient is φ = 1080800.

The previous prime is 1399963. The next prime is 1399999. The reversal of 1399975 is 5799931.

It is not a de Polignac number, because 1399975 - 2⁵ = 1399943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241 + ... + 1690.

It is an arithmetic number, because the mean of its divisors is an integer number (149730).

2^1399975 is an apocalyptic number.

1399975 is a deficient number, since it is larger than the sum of its proper divisors (396785).

1399975 is a wasteful number, since it uses less digits than its factorization.

1399975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970 (or 1965 counting only the distinct ones).

The product of its digits is 76545, while the sum is 43.

The square root of 1399975 is about 1183.2053921446. The cubic root of 1399975 is about 111.8682283179.

The spelling of 1399975 in words is "one million, three hundred ninety-nine thousand, nine hundred seventy-five".