71938249 has 8 divisors (see below), whose sum is σ = 74003328. Its totient is φ = 69879600.

The previous prime is 71938219. The next prime is 71938267. The reversal of 71938249 is 94283917.

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

It is a cyclic number.

It is not a de Polignac number, because 71938249 - 2⁷ = 71938121 is a prime.

It is a super-2 number, since 2×71938249² = 10350223338372002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71938219) 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 7 ways as a sum of consecutive naturals, for example, 29424 + ... + 31774.

It is an arithmetic number, because the mean of its divisors is an integer number (9250416).

Almost surely, 2^71938249 is an apocalyptic number.

It is an amenable number.

71938249 is a deficient number, since it is larger than the sum of its proper divisors (2065079).

71938249 is a wasteful number, since it uses less digits than its factorization.

71938249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215.

The product of its digits is 108864, while the sum is 43.

The square root of 71938249 is about 8481.6418811454. The cubic root of 71938249 is about 415.8977979486.

The spelling of 71938249 in words is "seventy-one million, nine hundred thirty-eight thousand, two hundred forty-nine".