76443939 has 48 divisors (see below), whose sum is σ = 133868160. Its totient is φ = 42737760.

The previous prime is 76443931. The next prime is 76443943. The reversal of 76443939 is 93934467.

It is not a de Polignac number, because 76443939 - 2³ = 76443931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76443894 and 76443903.

It is not an unprimeable number, because it can be changed into a prime (76443931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49432 + ... + 50954.

It is an arithmetic number, because the mean of its divisors is an integer number (2788920).

Almost surely, 2^76443939 is an apocalyptic number.

76443939 is a deficient number, since it is larger than the sum of its proper divisors (57424221).

76443939 is a wasteful number, since it uses less digits than its factorization.

76443939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569 (or 1550 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 76443939 is about 8743.2224608550. Note that the first 3 decimals coincide. The cubic root of 76443939 is about 424.4055153121.

The spelling of 76443939 in words is "seventy-six million, four hundred forty-three thousand, nine hundred thirty-nine".