39970741 has 2 divisors, whose sum is σ = 39970742. Its totient is φ = 39970740.

The previous prime is 39970739. The next prime is 39970747. The reversal of 39970741 is 14707993.

39970741 = 4470² + 4471².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19989841 + 19980900 = 4471^2 + 4470^2 .

It is a cyclic number.

It is not a de Polignac number, because 39970741 - 2¹ = 39970739 is a prime.

Together with 39970739, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 39970694 and 39970703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39970747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19985370 + 19985371.

It is an arithmetic number, because the mean of its divisors is an integer number (19985371).

Almost surely, 2^39970741 is an apocalyptic number.

39970741 is the 4471-st centered square number.

It is an amenable number.

39970741 is a deficient number, since it is larger than the sum of its proper divisors (1).

39970741 is an equidigital number, since it uses as much as digits as its factorization.

39970741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 39970741 is about 6322.2417701319. The cubic root of 39970741 is about 341.9117820182.

The spelling of 39970741 in words is "thirty-nine million, nine hundred seventy thousand, seven hundred forty-one".