1389009382 has 4 divisors (see below), whose sum is σ = 2083514076. Its totient is φ = 694504690.

The previous prime is 1389009379. The next prime is 1389009389. The reversal of 1389009382 is 2839009831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2839009831 = 7 ⋅405572833.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389009389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347252344 + ... + 347252347.

It is an arithmetic number, because the mean of its divisors is an integer number (520878519).

Almost surely, 2^1389009382 is an apocalyptic number.

1389009382 is a deficient number, since it is larger than the sum of its proper divisors (694504694).

1389009382 is an equidigital number, since it uses as much as digits as its factorization.

1389009382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694504693.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1389009382 is about 37269.4161746599. The cubic root of 1389009382 is about 1115.7538473608.

The spelling of 1389009382 in words is "one billion, three hundred eighty-nine million, nine thousand, three hundred eighty-two".