1389955 has 16 divisors (see below), whose sum is σ = 1926144. Its totient is φ = 943200.

The previous prime is 1389943. The next prime is 1389961. The reversal of 1389955 is 5599831.

It is a de Polignac number, because none of the positive numbers 2^k-1389955 is a prime.

It is a Duffinian number.

1389955 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5154 + ... + 5416.

It is an arithmetic number, because the mean of its divisors is an integer number (120384).

2^1389955 is an apocalyptic number.

1389955 is a deficient number, since it is larger than the sum of its proper divisors (536189).

1389955 is a wasteful number, since it uses less digits than its factorization.

1389955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426.

The product of its digits is 48600, while the sum is 40.

The square root of 1389955 is about 1178.9635278498. The cubic root of 1389955 is about 111.6006986420.

The spelling of 1389955 in words is "one million, three hundred eighty-nine thousand, nine hundred fifty-five".