44941781 has 4 divisors (see below), whose sum is σ = 46037964. Its totient is φ = 43845600.

The previous prime is 44941763. The next prime is 44941789. The reversal of 44941781 is 18714944.

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 25502500 + 19439281 = 5050^2 + 4409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44941781 is a prime.

It is a super-2 number, since 2×44941781² = 4039527358903922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44941789) 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, 548030 + ... + 548111.

It is an arithmetic number, because the mean of its divisors is an integer number (11509491).

Almost surely, 2^44941781 is an apocalyptic number.

44941781 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

44941781 is a deficient number, since it is larger than the sum of its proper divisors (1096183).

44941781 is a wasteful number, since it uses less digits than its factorization.

44941781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096182.

The product of its digits is 32256, while the sum is 38.

The square root of 44941781 is about 6703.8631400111. The cubic root of 44941781 is about 355.5358725685.

The spelling of 44941781 in words is "forty-four million, nine hundred forty-one thousand, seven hundred eighty-one".