44077721 has 2 divisors, whose sum is σ = 44077722. Its totient is φ = 44077720.

The previous prime is 44077699. The next prime is 44077727. The reversal of 44077721 is 12777044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43494025 + 583696 = 6595^2 + 764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44077721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44077727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22038860 + 22038861.

It is an arithmetic number, because the mean of its divisors is an integer number (22038861).

Almost surely, 2^44077721 is an apocalyptic number.

It is an amenable number.

44077721 is a deficient number, since it is larger than the sum of its proper divisors (1).

44077721 is an equidigital number, since it uses as much as digits as its factorization.

44077721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 44077721 is about 6639.1054367287. The cubic root of 44077721 is about 353.2425765677.

The spelling of 44077721 in words is "forty-four million, seventy-seven thousand, seven hundred twenty-one".