39948761 has 2 divisors, whose sum is σ = 39948762. Its totient is φ = 39948760.

The previous prime is 39948757. The next prime is 39948767. The reversal of 39948761 is 16784993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31854736 + 8094025 = 5644^2 + 2845^2 .

It is a cyclic number.

It is not a de Polignac number, because 39948761 - 2² = 39948757 is a prime.

It is not a weakly prime, because it can be changed into another prime (39948767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19974380 + 19974381.

It is an arithmetic number, because the mean of its divisors is an integer number (19974381).

Almost surely, 2^39948761 is an apocalyptic number.

It is an amenable number.

39948761 is a deficient number, since it is larger than the sum of its proper divisors (1).

39948761 is an equidigital number, since it uses as much as digits as its factorization.

39948761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 39948761 is about 6320.5032236365. The cubic root of 39948761 is about 341.8490978418.

The spelling of 39948761 in words is "thirty-nine million, nine hundred forty-eight thousand, seven hundred sixty-one".