1399382328 has 64 divisors (see below), whose sum is σ = 3611520000. Its totient is φ = 451516032.

The previous prime is 1399382323. The next prime is 1399382329. The reversal of 1399382328 is 8232839931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399382323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172753 + ... + 180671.

It is an arithmetic number, because the mean of its divisors is an integer number (56430000).

Almost surely, 2^1399382328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1399382328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1805760000).

1399382328 is an abundant number, since it is smaller than the sum of its proper divisors (2212137672).

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

1399382328 is a wasteful number, since it uses less digits than its factorization.

1399382328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164 (or 8160 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 1399382328 is about 37408.3189678446. The cubic root of 1399382328 is about 1118.5243981575.

The spelling of 1399382328 in words is "one billion, three hundred ninety-nine million, three hundred eighty-two thousand, three hundred twenty-eight".