1398479 has 4 divisors (see below), whose sum is σ = 1408680. Its totient is φ = 1388280.

The previous prime is 1398473. The next prime is 1398493. The reversal of 1398479 is 9748931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1398479 - 2¹² = 1394383 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398473) 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 3 ways as a sum of consecutive naturals, for example, 4892 + ... + 5169.

It is an arithmetic number, because the mean of its divisors is an integer number (352170).

2^1398479 is an apocalyptic number.

1398479 is a deficient number, since it is larger than the sum of its proper divisors (10201).

1398479 is a wasteful number, since it uses less digits than its factorization.

1398479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10200.

The product of its digits is 54432, while the sum is 41.

The square root of 1398479 is about 1182.5730421416. The cubic root of 1398479 is about 111.8283670070.

The spelling of 1398479 in words is "one million, three hundred ninety-eight thousand, four hundred seventy-nine".