44720729 has 2 divisors, whose sum is σ = 44720730. Its totient is φ = 44720728.

The previous prime is 44720713. The next prime is 44720743. The reversal of 44720729 is 92702744.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36626704 + 8094025 = 6052^2 + 2845^2 .

It is a cyclic number.

It is not a de Polignac number, because 44720729 - 2⁴ = 44720713 is a prime.

It is not a weakly prime, because it can be changed into another prime (44720789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22360364 + 22360365.

It is an arithmetic number, because the mean of its divisors is an integer number (22360365).

Almost surely, 2^44720729 is an apocalyptic number.

It is an amenable number.

44720729 is a deficient number, since it is larger than the sum of its proper divisors (1).

44720729 is an equidigital number, since it uses as much as digits as its factorization.

44720729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 44720729 is about 6687.3559049897. The cubic root of 44720729 is about 354.9519977415.

The spelling of 44720729 in words is "forty-four million, seven hundred twenty thousand, seven hundred twenty-nine".