44729821 has 2 divisors, whose sum is σ = 44729822. Its totient is φ = 44729820.

The previous prime is 44729813. The next prime is 44729837. The reversal of 44729821 is 12892744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 27225 = 6686^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 44729821 - 2³ = 44729813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44729221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22364910 + 22364911.

It is an arithmetic number, because the mean of its divisors is an integer number (22364911).

Almost surely, 2^44729821 is an apocalyptic number.

It is an amenable number.

44729821 is a deficient number, since it is larger than the sum of its proper divisors (1).

44729821 is an equidigital number, since it uses as much as digits as its factorization.

44729821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 44729821 is about 6688.0356607901. The cubic root of 44729821 is about 354.9760507549.

The spelling of 44729821 in words is "forty-four million, seven hundred twenty-nine thousand, eight hundred twenty-one".