71952939 has 12 divisors (see below), whose sum is σ = 104319072. Its totient is φ = 47790000.

The previous prime is 71952917. The next prime is 71952967. The reversal of 71952939 is 93925917.

It is a happy number.

It is not a de Polignac number, because 71952939 - 2¹² = 71948843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71952894 and 71952903.

It is not an unprimeable number, because it can be changed into a prime (71952989) 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, 12312 + ... + 17189.

It is an arithmetic number, because the mean of its divisors is an integer number (8693256).

Almost surely, 2^71952939 is an apocalyptic number.

71952939 is a deficient number, since it is larger than the sum of its proper divisors (32366133).

71952939 is a wasteful number, since it uses less digits than its factorization.

71952939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29778 (or 29775 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 71952939 is about 8482.5078249301. The cubic root of 71952939 is about 415.9261052025.

The spelling of 71952939 in words is "seventy-one million, nine hundred fifty-two thousand, nine hundred thirty-nine".