1398894 has 32 divisors (see below), whose sum is σ = 3367680. Its totient is φ = 378432.

The previous prime is 1398871. The next prime is 1398911. The reversal of 1398894 is 4988931.

1398894 = T₃₀₂ + T₃₀₃ + ... + T₃₂₉.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 79 + ... + 1674.

It is an arithmetic number, because the mean of its divisors is an integer number (105240).

2^1398894 is an apocalyptic number.

1398894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1683840).

1398894 is an abundant number, since it is smaller than the sum of its proper divisors (1968786).

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

1398894 is a wasteful number, since it uses less digits than its factorization.

1398894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784.

The product of its digits is 62208, while the sum is 42.

The square root of 1398894 is about 1182.7484939749. The cubic root of 1398894 is about 111.8394276384.

The spelling of 1398894 in words is "one million, three hundred ninety-eight thousand, eight hundred ninety-four".