1389051 has 6 divisors (see below), whose sum is σ = 2006420. Its totient is φ = 926028.

The previous prime is 1389007. The next prime is 1389083. The reversal of 1389051 is 1509831.

It is not a de Polignac number, because 1389051 - 2¹⁴ = 1372667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389001) 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 5 ways as a sum of consecutive naturals, for example, 77161 + ... + 77178.

2^1389051 is an apocalyptic number.

1389051 is a deficient number, since it is larger than the sum of its proper divisors (617369).

1389051 is a wasteful number, since it uses less digits than its factorization.

1389051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154345 (or 154342 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1389051 is about 1178.5800778903. The cubic root of 1389051 is about 111.5764990789.

The spelling of 1389051 in words is "one million, three hundred eighty-nine thousand, fifty-one".