1389516935 has 4 divisors (see below), whose sum is σ = 1667420328. Its totient is φ = 1111613544.

The previous prime is 1389516929. The next prime is 1389516941. The reversal of 1389516935 is 5396159831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5396159831 = 859 ⋅6281909.

It is an interprime number because it is at equal distance from previous prime (1389516929) and next prime (1389516941).

It is a cyclic number.

It is not a de Polignac number, because 1389516935 - 2¹⁴ = 1389500551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138951689 + ... + 138951698.

It is an arithmetic number, because the mean of its divisors is an integer number (416855082).

Almost surely, 2^1389516935 is an apocalyptic number.

1389516935 is a deficient number, since it is larger than the sum of its proper divisors (277903393).

1389516935 is an equidigital number, since it uses as much as digits as its factorization.

1389516935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277903392.

The product of its digits is 874800, while the sum is 50.

The square root of 1389516935 is about 37276.2247954376. The cubic root of 1389516935 is about 1115.8897320320.

The spelling of 1389516935 in words is "one billion, three hundred eighty-nine million, five hundred sixteen thousand, nine hundred thirty-five".