1379390000 has 100 divisors (see below), whose sum is σ = 3358549920. Its totient is φ = 548640000.

The previous prime is 1379389997. The next prime is 1379390021. The reversal of 1379390000 is 939731.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2709746 + ... + 2710254.

Almost surely, 2^1379390000 is an apocalyptic number.

1379390000 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 1379390000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679274960).

1379390000 is an abundant number, since it is smaller than the sum of its proper divisors (1979159920).

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

1379390000 is an equidigital number, since it uses as much as digits as its factorization.

1379390000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 1379390000 is about 37140.1400105062. The cubic root of 1379390000 is about 1113.1722150422.

The spelling of 1379390000 in words is "one billion, three hundred seventy-nine million, three hundred ninety thousand".