73440971 has 4 divisors (see below), whose sum is σ = 73459992. Its totient is φ = 73421952.

The previous prime is 73440959. The next prime is 73441013. The reversal of 73440971 is 17904437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17904437 = 157 ⋅114041.

It is a cyclic number.

It is not a de Polignac number, because 73440971 - 2⁶ = 73440907 is a prime.

It is a super-3 number, since 3×73440971³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73440371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1430 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (18364998).

Almost surely, 2^73440971 is an apocalyptic number.

73440971 is a deficient number, since it is larger than the sum of its proper divisors (19021).

73440971 is a wasteful number, since it uses less digits than its factorization.

73440971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19020.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 73440971 is about 8569.7707670626. The cubic root of 73440971 is about 418.7737684288.

The spelling of 73440971 in words is "seventy-three million, four hundred forty thousand, nine hundred seventy-one".