39044861 has 2 divisors, whose sum is σ = 39044862. Its totient is φ = 39044860.

The previous prime is 39044851. The next prime is 39044891. The reversal of 39044861 is 16844093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34739236 + 4305625 = 5894^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 39044861 - 2¹⁸ = 38782717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39044821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19522430 + 19522431.

It is an arithmetic number, because the mean of its divisors is an integer number (19522431).

Almost surely, 2^39044861 is an apocalyptic number.

It is an amenable number.

39044861 is a deficient number, since it is larger than the sum of its proper divisors (1).

39044861 is an equidigital number, since it uses as much as digits as its factorization.

39044861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 39044861 is about 6248.5887206633. The cubic root of 39044861 is about 339.2511227987.

The spelling of 39044861 in words is "thirty-nine million, forty-four thousand, eight hundred sixty-one".