71932949 has 4 divisors (see below), whose sum is σ = 78472320. Its totient is φ = 65393580.

The previous prime is 71932919. The next prime is 71932951. The reversal of 71932949 is 94923917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94923917 = 11 ⋅8629447.

It is a cyclic number.

It is not a de Polignac number, because 71932949 - 2¹⁶ = 71867413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71932919) 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, 3269669 + ... + 3269690.

It is an arithmetic number, because the mean of its divisors is an integer number (19618080).

Almost surely, 2^71932949 is an apocalyptic number.

It is an amenable number.

71932949 is a deficient number, since it is larger than the sum of its proper divisors (6539371).

71932949 is a wasteful number, since it uses less digits than its factorization.

71932949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539370.

The product of its digits is 122472, while the sum is 44.

The square root of 71932949 is about 8481.3294358844. The cubic root of 71932949 is about 415.8875840383.

The spelling of 71932949 in words is "seventy-one million, nine hundred thirty-two thousand, nine hundred forty-nine".