76440143 has 16 divisors (see below), whose sum is σ = 90175680. Its totient is φ = 64114176.

The previous prime is 76440103. The next prime is 76440179. The reversal of 76440143 is 34104467.

It is a cyclic number.

It is not a de Polignac number, because 76440143 - 2⁸ = 76439887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76440103) 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 15 ways as a sum of consecutive naturals, for example, 446 + ... + 12372.

It is an arithmetic number, because the mean of its divisors is an integer number (5635980).

Almost surely, 2^76440143 is an apocalyptic number.

76440143 is a deficient number, since it is larger than the sum of its proper divisors (13735537).

76440143 is a wasteful number, since it uses less digits than its factorization.

76440143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11986.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 76440143 is about 8743.0053757275. The cubic root of 76440143 is about 424.3984902511.

The spelling of 76440143 in words is "seventy-six million, four hundred forty thousand, one hundred forty-three".