1389079079 has 4 divisors (see below), whose sum is σ = 1389153840. Its totient is φ = 1389004320.

The previous prime is 1389079051. The next prime is 1389079117. The reversal of 1389079079 is 9709709831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1389079079 - 2¹² = 1389074983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389079079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389079039) 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, 14399 + ... + 54639.

It is an arithmetic number, because the mean of its divisors is an integer number (347288460).

Almost surely, 2^1389079079 is an apocalyptic number.

1389079079 is a deficient number, since it is larger than the sum of its proper divisors (74761).

1389079079 is an equidigital number, since it uses as much as digits as its factorization.

1389079079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74760.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 1389079079 is about 37270.3512057507. The cubic root of 1389079079 is about 1115.7725089567.

The spelling of 1389079079 in words is "one billion, three hundred eighty-nine million, seventy-nine thousand, seventy-nine".