1399738 has 8 divisors (see below), whose sum is σ = 2106432. Its totient is φ = 697596.

The previous prime is 1399733. The next prime is 1399751. The reversal of 1399738 is 8379931.

1399738 is nontrivially palindromic in base 5.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1399738.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399733) 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, 220 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (263304).

2^1399738 is an apocalyptic number.

1399738 is a deficient number, since it is larger than the sum of its proper divisors (706694).

1399738 is a wasteful number, since it uses less digits than its factorization.

1399738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276.

The product of its digits is 40824, while the sum is 40.

The square root of 1399738 is about 1183.1052362322. The cubic root of 1399738 is about 111.8619152846.

The spelling of 1399738 in words is "one million, three hundred ninety-nine thousand, seven hundred thirty-eight".