1398006 has 16 divisors (see below), whose sum is σ = 3106800. Its totient is φ = 465984.

The previous prime is 1397999. The next prime is 1398011. The reversal of 1398006 is 6008931.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12891 + ... + 12998.

It is an arithmetic number, because the mean of its divisors is an integer number (194175).

2^1398006 is an apocalyptic number.

1398006 is an abundant number, since it is smaller than the sum of its proper divisors (1708794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1398006 is a wasteful number, since it uses less digits than its factorization.

1398006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25900 (or 25894 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1398006 is about 1182.3730375816. The cubic root of 1398006 is about 111.8157578837.

The spelling of 1398006 in words is "one million, three hundred ninety-eight thousand, six".