71073399 has 16 divisors (see below), whose sum is σ = 97140992. Its totient is φ = 46208448.

The previous prime is 71073389. The next prime is 71073407. The reversal of 71073399 is 99337017.

It is not a de Polignac number, because 71073399 - 2²¹ = 68976247 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 (71073349) 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, 18987 + ... + 22419.

It is an arithmetic number, because the mean of its divisors is an integer number (6071312).

Almost surely, 2^71073399 is an apocalyptic number.

71073399 is a deficient number, since it is larger than the sum of its proper divisors (26067593).

71073399 is a wasteful number, since it uses less digits than its factorization.

71073399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606.

The product of its (nonzero) digits is 35721, while the sum is 39.

The square root of 71073399 is about 8430.5040774559. The cubic root of 71073399 is about 414.2244168241.

The spelling of 71073399 in words is "seventy-one million, seventy-three thousand, three hundred ninety-nine".