1380440579 has 12 divisors (see below), whose sum is σ = 1675910544. Its totient is φ = 1113631104.

The previous prime is 1380440569. The next prime is 1380440591. The reversal of 1380440579 is 9750440831.

It is not a de Polignac number, because 1380440579 - 2²⁴ = 1363663363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1380440539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339164 + ... + 343209.

It is an arithmetic number, because the mean of its divisors is an integer number (139659212).

Almost surely, 2^1380440579 is an apocalyptic number.

1380440579 is a deficient number, since it is larger than the sum of its proper divisors (295469965).

1380440579 is an equidigital number, since it uses as much as digits as its factorization.

1380440579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682414 (or 682397 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1380440579 is about 37154.2807627869. The cubic root of 1380440579 is about 1113.4547502153.

The spelling of 1380440579 in words is "one billion, three hundred eighty million, four hundred forty thousand, five hundred seventy-nine".