1398912 has 32 divisors (see below), whose sum is σ = 3716880. Its totient is φ = 466176.

The previous prime is 1398911. The next prime is 1398967. The reversal of 1398912 is 2198931.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1398911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1438 + ... + 2205.

2^1398912 is an apocalyptic number.

1398912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1398912 is an abundant number, since it is smaller than the sum of its proper divisors (2317968).

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

1398912 is an equidigital number, since it uses as much as digits as its factorization.

1398912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660 (or 3648 counting only the distinct ones).

The product of its digits is 3888, while the sum is 33.

The square root of 1398912 is about 1182.7561033451. The cubic root of 1398912 is about 111.8399073272.

The spelling of 1398912 in words is "one million, three hundred ninety-eight thousand, nine hundred twelve".