1398842 has 8 divisors (see below), whose sum is σ = 2128032. Its totient is φ = 689500.

The previous prime is 1398841. The next prime is 1398847. The reversal of 1398842 is 2488931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1398841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4784 + ... + 5067.

It is an arithmetic number, because the mean of its divisors is an integer number (266004).

2^1398842 is an apocalyptic number.

1398842 is a deficient number, since it is larger than the sum of its proper divisors (729190).

1398842 is an equidigital number, since it uses as much as digits as its factorization.

1398842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9924.

The product of its digits is 13824, while the sum is 35.

The square root of 1398842 is about 1182.7265110752. The cubic root of 1398842 is about 111.8380418479.

The spelling of 1398842 in words is "one million, three hundred ninety-eight thousand, eight hundred forty-two".