1398039 has 8 divisors (see below), whose sum is σ = 1962240. Its totient is φ = 882936.

The previous prime is 1398037. The next prime is 1398043. The reversal of 1398039 is 9308931.

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

It is not a de Polignac number, because 1398039 - 2¹ = 1398037 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398031) 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 7 ways as a sum of consecutive naturals, for example, 12207 + ... + 12320.

It is an arithmetic number, because the mean of its divisors is an integer number (245280).

2^1398039 is an apocalyptic number.

1398039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1398039 is a deficient number, since it is larger than the sum of its proper divisors (564201).

1398039 is a wasteful number, since it uses less digits than its factorization.

1398039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24549.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1398039 is about 1182.3869924860. The cubic root of 1398039 is about 111.8166376823.

The spelling of 1398039 in words is "one million, three hundred ninety-eight thousand, thirty-nine".