79489271 has 8 divisors (see below), whose sum is σ = 80225904. Its totient is φ = 78756480.

The previous prime is 79489253. The next prime is 79489273. The reversal of 79489271 is 17298497.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79489271 is a prime.

It is a super-2 number, since 2×79489271² = 12637088408222882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79489273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53981 + ... + 55433.

It is an arithmetic number, because the mean of its divisors is an integer number (10028238).

Almost surely, 2^79489271 is an apocalyptic number.

79489271 is a deficient number, since it is larger than the sum of its proper divisors (736633).

79489271 is a wasteful number, since it uses less digits than its factorization.

79489271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its digits is 254016, while the sum is 47.

The square root of 79489271 is about 8915.6755773189. The cubic root of 79489271 is about 429.9680362035.

The spelling of 79489271 in words is "seventy-nine million, four hundred eighty-nine thousand, two hundred seventy-one".