1380217 has 4 divisors (see below), whose sum is σ = 1452880. Its totient is φ = 1307556.

The previous prime is 1380199. The next prime is 1380221. The reversal of 1380217 is 7120831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7120831 = 139 ⋅51229.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380227) 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, 36303 + ... + 36340.

It is an arithmetic number, because the mean of its divisors is an integer number (363220).

2^1380217 is an apocalyptic number.

It is an amenable number.

1380217 is a deficient number, since it is larger than the sum of its proper divisors (72663).

1380217 is an equidigital number, since it uses as much as digits as its factorization.

1380217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72662.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1380217 is about 1174.8263701501. The cubic root of 1380217 is about 111.3394634495.

The spelling of 1380217 in words is "one million, three hundred eighty thousand, two hundred seventeen".