71029749 has 16 divisors (see below), whose sum is σ = 109762560. Its totient is φ = 40015920.

The previous prime is 71029709. The next prime is 71029789. The reversal of 71029749 is 94792017.

It is an interprime number because it is at equal distance from previous prime (71029709) and next prime (71029789).

It is not a de Polignac number, because 71029749 - 2¹⁶ = 70964213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71029709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22329 + ... + 25310.

It is an arithmetic number, because the mean of its divisors is an integer number (6860160).

Almost surely, 2^71029749 is an apocalyptic number.

It is an amenable number.

71029749 is a deficient number, since it is larger than the sum of its proper divisors (38732811).

71029749 is a wasteful number, since it uses less digits than its factorization.

71029749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47720.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 71029749 is about 8427.9148666797. The cubic root of 71029749 is about 414.1396002880.

The spelling of 71029749 in words is "seventy-one million, twenty-nine thousand, seven hundred forty-nine".