39448861 has 2 divisors, whose sum is σ = 39448862. Its totient is φ = 39448860.

The previous prime is 39448831. The next prime is 39448939. The reversal of 39448861 is 16884493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34692100 + 4756761 = 5890^2 + 2181^2 .

It is a cyclic number.

It is not a de Polignac number, because 39448861 - 2⁷ = 39448733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39448811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19724430 + 19724431.

It is an arithmetic number, because the mean of its divisors is an integer number (19724431).

Almost surely, 2^39448861 is an apocalyptic number.

It is an amenable number.

39448861 is a deficient number, since it is larger than the sum of its proper divisors (1).

39448861 is an equidigital number, since it uses as much as digits as its factorization.

39448861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 39448861 is about 6280.8328269426. The cubic root of 39448861 is about 340.4171954852.

It can be divided in two parts, 39 and 448861, that added together give a square (448900 = 670²).

The spelling of 39448861 in words is "thirty-nine million, four hundred forty-eight thousand, eight hundred sixty-one".