1389067479 has 12 divisors (see below), whose sum is σ = 2015045136. Its totient is φ = 922069152.

The previous prime is 1389067439. The next prime is 1389067487. The reversal of 1389067479 is 9747609831.

It is a happy number.

It is not a de Polignac number, because 1389067479 - 2²⁷ = 1254849751 is a prime.

It is a super-2 number, since 2×1389067479² = 3859016922430830882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389067439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329107 + ... + 333300.

It is an arithmetic number, because the mean of its divisors is an integer number (167920428).

Almost surely, 2^1389067479 is an apocalyptic number.

1389067479 is a deficient number, since it is larger than the sum of its proper divisors (625977657).

1389067479 is a wasteful number, since it uses less digits than its factorization.

1389067479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662646 (or 662643 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1389067479 is about 37270.1955857492. The cubic root of 1389067479 is about 1115.7694030627.

The spelling of 1389067479 in words is "one billion, three hundred eighty-nine million, sixty-seven thousand, four hundred seventy-nine".