44643961 has 4 divisors (see below), whose sum is σ = 44673124. Its totient is φ = 44614800.

The previous prime is 44643947. The next prime is 44643983. The reversal of 44643961 is 16934644.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26419600 + 18224361 = 5140^2 + 4269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44643961 is a prime.

It is a deceptive number, since it divides R_44643960.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44643961.

It is not an unprimeable number, because it can be changed into a prime (44643061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12150 + ... + 15391.

It is an arithmetic number, because the mean of its divisors is an integer number (11168281).

Almost surely, 2^44643961 is an apocalyptic number.

It is an amenable number.

44643961 is a deficient number, since it is larger than the sum of its proper divisors (29163).

44643961 is a wasteful number, since it uses less digits than its factorization.

44643961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29162.

The product of its digits is 62208, while the sum is 37.

The square root of 44643961 is about 6681.6136524046. The cubic root of 44643961 is about 354.7487768311.

The spelling of 44643961 in words is "forty-four million, six hundred forty-three thousand, nine hundred sixty-one".