1398450 has 24 divisors (see below), whose sum is σ = 3468528. Its totient is φ = 372880.

The previous prime is 1398427. The next prime is 1398451. The reversal of 1398450 is 548931.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4512 + ... + 4811.

It is an arithmetic number, because the mean of its divisors is an integer number (144522).

2^1398450 is an apocalyptic number.

1398450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398450 is an abundant number, since it is smaller than the sum of its proper divisors (2070078).

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

1398450 is a wasteful number, since it uses less digits than its factorization.

1398450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9338 (or 9333 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1398450 is about 1182.5607806789. The cubic root of 1398450 is about 111.8275940136.

The spelling of 1398450 in words is "one million, three hundred ninety-eight thousand, four hundred fifty".