44739945 has 48 divisors (see below), whose sum is σ = 83970432. Its totient is φ = 22809600.

The previous prime is 44739943. The next prime is 44739967. The reversal of 44739945 is 54993744.

It is a happy number.

It is not a de Polignac number, because 44739945 - 2¹ = 44739943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 44739945.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44739943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27145 + ... + 28745.

It is an arithmetic number, because the mean of its divisors is an integer number (1749384).

Almost surely, 2^44739945 is an apocalyptic number.

44739945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44739945 is a deficient number, since it is larger than the sum of its proper divisors (39230487).

44739945 is a wasteful number, since it uses less digits than its factorization.

44739945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 1632 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 44739945 is about 6688.7924919226. The cubic root of 44739945 is about 355.0028301037.

The spelling of 44739945 in words is "forty-four million, seven hundred thirty-nine thousand, nine hundred forty-five".