1389907 has 8 divisors (see below), whose sum is σ = 1474560. Its totient is φ = 1306440.

The previous prime is 1389893. The next prime is 1389911. The reversal of 1389907 is 7099831.

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

It is not a de Polignac number, because 1389907 - 2¹⁹ = 865619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389917) 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, 3438 + ... + 3820.

It is an arithmetic number, because the mean of its divisors is an integer number (184320).

2^1389907 is an apocalyptic number.

1389907 is a deficient number, since it is larger than the sum of its proper divisors (84653).

1389907 is a wasteful number, since it uses less digits than its factorization.

1389907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1389907 is about 1178.9431708102. The cubic root of 1389907 is about 111.5994139733.

The spelling of 1389907 in words is "one million, three hundred eighty-nine thousand, nine hundred seven".