42993944 has 16 divisors (see below), whose sum is σ = 92130000. Its totient is φ = 18425952.

The previous prime is 42993943. The next prime is 42993947. The reversal of 42993944 is 44939924.

It is a junction number, because it is equal to n+sod(n) for n = 42993895 and 42993904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42993943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383819 + ... + 383930.

It is an arithmetic number, because the mean of its divisors is an integer number (5758125).

Almost surely, 2^42993944 is an apocalyptic number.

It is an amenable number.

42993944 is an abundant number, since it is smaller than the sum of its proper divisors (49136056).

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

42993944 is a wasteful number, since it uses less digits than its factorization.

42993944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767762 (or 767758 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 42993944 is about 6556.9767423714. The cubic root of 42993944 is about 350.3233583063.

The spelling of 42993944 in words is "forty-two million, nine hundred ninety-three thousand, nine hundred forty-four".