43949564 has 6 divisors (see below), whose sum is σ = 76911744. Its totient is φ = 21974780.

The previous prime is 43949551. The next prime is 43949567. The reversal of 43949564 is 46594934.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43949567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5493692 + ... + 5493699.

It is an arithmetic number, because the mean of its divisors is an integer number (12818624).

Almost surely, 2^43949564 is an apocalyptic number.

It is an amenable number.

43949564 is a deficient number, since it is larger than the sum of its proper divisors (32962180).

43949564 is a wasteful number, since it uses less digits than its factorization.

43949564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10987395 (or 10987393 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 43949564 is about 6629.4467340797. The cubic root of 43949564 is about 352.8998905585.

The spelling of 43949564 in words is "forty-three million, nine hundred forty-nine thousand, five hundred sixty-four".