1380539 has 4 divisors (see below), whose sum is σ = 1397256. Its totient is φ = 1363824.

The previous prime is 1380517. The next prime is 1380551. The reversal of 1380539 is 9350831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1380539 - 2⁸ = 1380283 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8234 + ... + 8399.

It is an arithmetic number, because the mean of its divisors is an integer number (349314).

2^1380539 is an apocalyptic number.

1380539 is a deficient number, since it is larger than the sum of its proper divisors (16717).

1380539 is an equidigital number, since it uses as much as digits as its factorization.

1380539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16716.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1380539 is about 1174.9634036854. The cubic root of 1380539 is about 111.3481211508.

The spelling of 1380539 in words is "one million, three hundred eighty thousand, five hundred thirty-nine".