71049799 has 4 divisors (see below), whose sum is σ = 73341760. Its totient is φ = 68757840.

The previous prime is 71049793. The next prime is 71049809. The reversal of 71049799 is 99794017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99794017 = 29 ⋅3441173.

It is a cyclic number.

It is not a de Polignac number, because 71049799 - 2²¹ = 68952647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71049793) 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, 1145934 + ... + 1145995.

It is an arithmetic number, because the mean of its divisors is an integer number (18335440).

Almost surely, 2^71049799 is an apocalyptic number.

71049799 is a deficient number, since it is larger than the sum of its proper divisors (2291961).

71049799 is a wasteful number, since it uses less digits than its factorization.

71049799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291960.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 71049799 is about 8429.1042821880. The cubic root of 71049799 is about 414.1785638581.

The spelling of 71049799 in words is "seventy-one million, forty-nine thousand, seven hundred ninety-nine".