76443940 has 24 divisors (see below), whose sum is σ = 163255680. Its totient is φ = 30058848.

The previous prime is 76443931. The next prime is 76443943. The reversal of 76443940 is 4934467.

It is a self number, because there is not a number n which added to its sum of digits gives 76443940.

It is not an unprimeable number, because it can be changed into a prime (76443943) 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 7 ways as a sum of consecutive naturals, for example, 31212 + ... + 33571.

It is an arithmetic number, because the mean of its divisors is an integer number (6802320).

Almost surely, 2^76443940 is an apocalyptic number.

It is an amenable number.

76443940 is an abundant number, since it is smaller than the sum of its proper divisors (86811740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76443940 is a wasteful number, since it uses less digits than its factorization.

76443940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64851 (or 64849 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 76443940 is about 8743.2225180422. Note that the first 3 decimals coincide. The cubic root of 76443940 is about 424.4055171627.

The spelling of 76443940 in words is "seventy-six million, four hundred forty-three thousand, nine hundred forty".