71948169 has 12 divisors (see below), whose sum is σ = 107774576. Its totient is φ = 47965284.

The previous prime is 71948161. The next prime is 71948171. The reversal of 71948169 is 96184917.

It is a happy number.

It is not a de Polignac number, because 71948169 - 2³ = 71948161 is a prime.

It is a super-2 number, since 2×71948169² = 10353078044905122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71948161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147799 + ... + 148284.

Almost surely, 2^71948169 is an apocalyptic number.

It is an amenable number.

71948169 is a deficient number, since it is larger than the sum of its proper divisors (35826407).

71948169 is an equidigital number, since it uses as much as digits as its factorization.

71948169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296098 (or 296086 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 71948169 is about 8482.2266534207. The cubic root of 71948169 is about 415.9169139571.

The spelling of 71948169 in words is "seventy-one million, nine hundred forty-eight thousand, one hundred sixty-nine".