1389029239 has 4 divisors (see below), whose sum is σ = 1495877656. Its totient is φ = 1282180824.

The previous prime is 1389029227. The next prime is 1389029249. The reversal of 1389029239 is 9329209831.

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 1389029239 - 2⁷ = 1389029111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389029249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53424189 + ... + 53424214.

It is an arithmetic number, because the mean of its divisors is an integer number (373969414).

Almost surely, 2^1389029239 is an apocalyptic number.

1389029239 is a deficient number, since it is larger than the sum of its proper divisors (106848417).

1389029239 is a wasteful number, since it uses less digits than its factorization.

1389029239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106848416.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 1389029239 is about 37269.6825717633. The cubic root of 1389029239 is about 1115.7591642000.

The spelling of 1389029239 in words is "one billion, three hundred eighty-nine million, twenty-nine thousand, two hundred thirty-nine".