43696949 has 4 divisors (see below), whose sum is σ = 45106560. Its totient is φ = 42287340.

The previous prime is 43696921. The next prime is 43696967. The reversal of 43696949 is 94969634.

It is a happy number.

43696949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43696949 - 2¹² = 43692853 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43696897 and 43696906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43696909) 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 3 ways as a sum of consecutive naturals, for example, 704759 + ... + 704820.

It is an arithmetic number, because the mean of its divisors is an integer number (11276640).

Almost surely, 2^43696949 is an apocalyptic number.

It is an amenable number.

43696949 is a deficient number, since it is larger than the sum of its proper divisors (1409611).

43696949 is a wasteful number, since it uses less digits than its factorization.

43696949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409610.

The product of its digits is 1259712, while the sum is 50.

The square root of 43696949 is about 6610.3667825621. The cubic root of 43696949 is about 352.2224537602. Note that the first 3 decimals are identical.

The spelling of 43696949 in words is "forty-three million, six hundred ninety-six thousand, nine hundred forty-nine".