1389772 has 6 divisors (see below), whose sum is σ = 2432108. Its totient is φ = 694884.

The previous prime is 1389769. The next prime is 1389797. The reversal of 1389772 is 2779831.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173718 + ... + 173725.

2^1389772 is an apocalyptic number.

It is an amenable number.

1389772 is a deficient number, since it is larger than the sum of its proper divisors (1042336).

1389772 is a wasteful number, since it uses less digits than its factorization.

1389772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347447 (or 347445 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 1389772 is about 1178.8859147517. The cubic root of 1389772 is about 111.5958006839.

The spelling of 1389772 in words is "one million, three hundred eighty-nine thousand, seven hundred seventy-two".