1389084480 has 168 divisors, whose sum is σ = 5460504192. Its totient is φ = 317500416.

The previous prime is 1389084461. The next prime is 1389084481. The reversal of 1389084480 is 844809831.

1389084480 is a `hidden beast` number, since 1 + 3 + 8 + 90 + 84 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389084481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14292 + ... + 54611.

Almost surely, 2^1389084480 is an apocalyptic number.

1389084480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389084480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2730252096).

1389084480 is an abundant number, since it is smaller than the sum of its proper divisors (4071419712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389084480 is a wasteful number, since it uses less digits than its factorization.

1389084480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68933 (or 68920 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 1389084480 is about 37270.4236627383. The cubic root of 1389084480 is about 1115.7739550657.

The spelling of 1389084480 in words is "one billion, three hundred eighty-nine million, eighty-four thousand, four hundred eighty".