1389602448 has 240 divisors, whose sum is σ = 4371150784. Its totient is φ = 409328640.

The previous prime is 1389602429. The next prime is 1389602521. The reversal of 1389602448 is 8442069831.

It is a happy number.

1389602448 is a `hidden beast` number, since 1 + 38 + 9 + 602 + 4 + 4 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4910115 + ... + 4910397.

Almost surely, 2^1389602448 is an apocalyptic number.

1389602448 is a gapful number since it is divisible by the number (18) 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 1389602448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2185575392).

1389602448 is an abundant number, since it is smaller than the sum of its proper divisors (2981548336).

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

1389602448 is a wasteful number, since it uses less digits than its factorization.

1389602448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 1389602448 is about 37277.3717957691. The cubic root of 1389602448 is about 1115.9126227501.

The spelling of 1389602448 in words is "one billion, three hundred eighty-nine million, six hundred two thousand, four hundred forty-eight".