1380899 has 6 divisors (see below), whose sum is σ = 1495476. Its totient is φ = 1274520.

The previous prime is 1380889. The next prime is 1380913. The reversal of 1380899 is 9980831.

It is a de Polignac number, because none of the positive numbers 2^k-1380899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3917 + ... + 4254.

It is an arithmetic number, because the mean of its divisors is an integer number (249246).

2^1380899 is an apocalyptic number.

1380899 is a deficient number, since it is larger than the sum of its proper divisors (114577).

1380899 is an equidigital number, since it uses as much as digits as its factorization.

1380899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8197 (or 8184 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1380899 is about 1175.1165899603. The cubic root of 1380899 is about 111.3577989746.

The spelling of 1380899 in words is "one million, three hundred eighty thousand, eight hundred ninety-nine".