44368721 has 2 divisors, whose sum is σ = 44368722. Its totient is φ = 44368720.

The previous prime is 44368717. The next prime is 44368747. The reversal of 44368721 is 12786344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22848400 + 21520321 = 4780^2 + 4639^2 .

It is a cyclic number.

It is not a de Polignac number, because 44368721 - 2² = 44368717 is a prime.

It is equal to p_2682296 and since 44368721 and 2682296 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (44368421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22184360 + 22184361.

It is an arithmetic number, because the mean of its divisors is an integer number (22184361).

Almost surely, 2^44368721 is an apocalyptic number.

It is an amenable number.

44368721 is a deficient number, since it is larger than the sum of its proper divisors (1).

44368721 is an equidigital number, since it uses as much as digits as its factorization.

44368721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 44368721 is about 6660.9849872222. The cubic root of 44368721 is about 354.0182382849.

The spelling of 44368721 in words is "forty-four million, three hundred sixty-eight thousand, seven hundred twenty-one".