1382172247 has 4 divisors (see below), whose sum is σ = 1382777320. Its totient is φ = 1381567176.

The previous prime is 1382172203. The next prime is 1382172299. The reversal of 1382172247 is 7422712831.

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-1382172247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1382178247) 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, 299097 + ... + 303682.

It is an arithmetic number, because the mean of its divisors is an integer number (345694330).

Almost surely, 2^1382172247 is an apocalyptic number.

1382172247 is a deficient number, since it is larger than the sum of its proper divisors (605073).

1382172247 is an equidigital number, since it uses as much as digits as its factorization.

1382172247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605072.

The product of its digits is 37632, while the sum is 37.

The square root of 1382172247 is about 37177.5772072361. The cubic root of 1382172247 is about 1113.9201398679.

It can be divided in two parts, 13821 and 72247, that added together give a palindrome (86068).

The spelling of 1382172247 in words is "one billion, three hundred eighty-two million, one hundred seventy-two thousand, two hundred forty-seven".