1389953 has 4 divisors (see below), whose sum is σ = 1392468. Its totient is φ = 1387440.

The previous prime is 1389943. The next prime is 1389961. The reversal of 1389953 is 3599831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3599831 = 43 ⋅83717.

It can be written as a sum of positive squares in 2 ways, for example, as 452929 + 937024 = 673^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389953 - 2⁸ = 1389697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (348117).

2^1389953 is an apocalyptic number.

It is an amenable number.

1389953 is a deficient number, since it is larger than the sum of its proper divisors (2515).

1389953 is an equidigital number, since it uses as much as digits as its factorization.

1389953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514.

The product of its digits is 29160, while the sum is 38.

The square root of 1389953 is about 1178.9626796468. The cubic root of 1389953 is about 111.6006451147.

The spelling of 1389953 in words is "one million, three hundred eighty-nine thousand, nine hundred fifty-three".