39402241 has 2 divisors, whose sum is σ = 39402242. Its totient is φ = 39402240.

The previous prime is 39402229. The next prime is 39402247. The reversal of 39402241 is 14220493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26471025 + 12931216 = 5145^2 + 3596^2 .

It is a cyclic number.

It is not a de Polignac number, because 39402241 - 2⁷ = 39402113 is a prime.

It is not a weakly prime, because it can be changed into another prime (39402247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19701120 + 19701121.

It is an arithmetic number, because the mean of its divisors is an integer number (19701121).

Almost surely, 2^39402241 is an apocalyptic number.

It is an amenable number.

39402241 is a deficient number, since it is larger than the sum of its proper divisors (1).

39402241 is an equidigital number, since it uses as much as digits as its factorization.

39402241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 39402241 is about 6277.1204385450. The cubic root of 39402241 is about 340.2830428541.

It can be divided in two parts, 3940224 and 1, that added together give a square (3940225 = 1985²).

The spelling of 39402241 in words is "thirty-nine million, four hundred two thousand, two hundred forty-one".