1389704 has 8 divisors (see below), whose sum is σ = 2605710. Its totient is φ = 694848.

The previous prime is 1389697. The next prime is 1389727. The reversal of 1389704 is 4079831.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 487204 = 950^2 + 698^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86849 + ... + 86864.

2^1389704 is an apocalyptic number.

It is an amenable number.

1389704 is a deficient number, since it is larger than the sum of its proper divisors (1216006).

1389704 is a wasteful number, since it uses less digits than its factorization.

1389704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173719 (or 173715 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1389704 is about 1178.8570736099. The cubic root of 1389704 is about 111.5939805680.

The spelling of 1389704 in words is "one million, three hundred eighty-nine thousand, seven hundred four".