43319961 has 16 divisors (see below), whose sum is σ = 67953600. Its totient is φ = 27180864.

The previous prime is 43319953. The next prime is 43319977. The reversal of 43319961 is 16991334.

It is not a de Polignac number, because 43319961 - 2³ = 43319953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43319951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46731 + ... + 47648.

It is an arithmetic number, because the mean of its divisors is an integer number (4247100).

Almost surely, 2^43319961 is an apocalyptic number.

It is an amenable number.

43319961 is a deficient number, since it is larger than the sum of its proper divisors (24633639).

43319961 is a wasteful number, since it uses less digits than its factorization.

43319961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94405 (or 94399 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 43319961 is about 6581.7901060426. The cubic root of 43319961 is about 351.2066136894.

The spelling of 43319961 in words is "forty-three million, three hundred nineteen thousand, nine hundred sixty-one".