1398455 has 8 divisors (see below), whose sum is σ = 1684800. Its totient is φ = 1114336.

The previous prime is 1398451. The next prime is 1398473. The reversal of 1398455 is 5548931.

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

It is a cyclic number.

It is not a de Polignac number, because 1398455 - 2² = 1398451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586 + ... + 2304.

It is an arithmetic number, because the mean of its divisors is an integer number (210600).

2^1398455 is an apocalyptic number.

1398455 is a deficient number, since it is larger than the sum of its proper divisors (286345).

1398455 is an equidigital number, since it uses as much as digits as its factorization.

1398455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its digits is 21600, while the sum is 35.

The square root of 1398455 is about 1182.5628947333. The cubic root of 1398455 is about 111.8277272891.

The spelling of 1398455 in words is "one million, three hundred ninety-eight thousand, four hundred fifty-five".