1383971 has 4 divisors (see below), whose sum is σ = 1387200. Its totient is φ = 1380744.

The previous prime is 1383961. The next prime is 1383983. The reversal of 1383971 is 1793831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1383971 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1383901) 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, 851 + ... + 1868.

It is an arithmetic number, because the mean of its divisors is an integer number (346800).

2^1383971 is an apocalyptic number.

1383971 is a deficient number, since it is larger than the sum of its proper divisors (3229).

1383971 is an equidigital number, since it uses as much as digits as its factorization.

1383971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228.

The product of its digits is 4536, while the sum is 32.

The square root of 1383971 is about 1176.4229681539. The cubic root of 1383971 is about 111.4403147355.

The spelling of 1383971 in words is "one million, three hundred eighty-three thousand, nine hundred seventy-one".