747971 has 4 divisors (see below), whose sum is σ = 854832. Its totient is φ = 641112.

The previous prime is 747953. The next prime is 747977. The reversal of 747971 is 179747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179747 = 173 ⋅1039.

It is a cyclic number.

It is not a de Polignac number, because 747971 - 2¹⁴ = 731587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53420 + ... + 53433.

It is an arithmetic number, because the mean of its divisors is an integer number (213708).

2⁷⁴⁷⁹⁷¹ is an apocalyptic number.

747971 is a deficient number, since it is larger than the sum of its proper divisors (106861).

747971 is a wasteful number, since it uses less digits than its factorization.

747971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106860.

The product of its digits is 12348, while the sum is 35.

The square root of 747971 is about 864.8531667283. The cubic root of 747971 is about 90.7740236974.

The spelling of 747971 in words is "seven hundred forty-seven thousand, nine hundred seventy-one".