71491929 has 16 divisors (see below), whose sum is σ = 97861632. Its totient is φ = 46399248.

The previous prime is 71491913. The next prime is 71491933. The reversal of 71491929 is 92919417.

It is not a de Polignac number, because 71491929 - 2⁴ = 71491913 is a prime.

It is a super-2 number, since 2×71491929² = 10222191824282082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71491909) 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 15 ways as a sum of consecutive naturals, for example, 48684 + ... + 50130.

It is an arithmetic number, because the mean of its divisors is an integer number (6116352).

Almost surely, 2^71491929 is an apocalyptic number.

It is an amenable number.

71491929 is a deficient number, since it is larger than the sum of its proper divisors (26369703).

71491929 is a wasteful number, since it uses less digits than its factorization.

71491929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876.

The product of its digits is 40824, while the sum is 42.

The square root of 71491929 is about 8455.2900009402. The cubic root of 71491929 is about 415.0359072816.

The spelling of 71491929 in words is "seventy-one million, four hundred ninety-one thousand, nine hundred twenty-nine".