44721963 has 72 divisors (see below), whose sum is σ = 79831920. Its totient is φ = 25019280.

The previous prime is 44721961. The next prime is 44721997. The reversal of 44721963 is 36912744.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 44721963 - 2¹ = 44721961 is a prime.

Its product of digits (36288) is a multiple of the sum of its prime divisors (27).

It is not an unprimeable number, because it can be changed into a prime (44721961) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3440145 + ... + 3440157.

Almost surely, 2^44721963 is an apocalyptic number.

44721963 is a deficient number, since it is larger than the sum of its proper divisors (35109957).

44721963 is an equidigital number, since it uses as much as digits as its factorization.

44721963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 27 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 44721963 is about 6687.4481680234. The cubic root of 44721963 is about 354.9552624970.

The spelling of 44721963 in words is "forty-four million, seven hundred twenty-one thousand, nine hundred sixty-three".