3952909 has 2 divisors, whose sum is σ = 3952910. Its totient is φ = 3952908.

The previous prime is 3952873. The next prime is 3952919. The reversal of 3952909 is 9092593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2205225 + 1747684 = 1485^2 + 1322^2 .

It is an emirp because it is prime and its reverse (9092593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3952909 - 2¹⁵ = 3920141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3952919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1976454 + 1976455.

It is an arithmetic number, because the mean of its divisors is an integer number (1976455).

Almost surely, 2^3952909 is an apocalyptic number.

It is an amenable number.

3952909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3952909 is an equidigital number, since it uses as much as digits as its factorization.

3952909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 3952909 is about 1988.1923951167. The cubic root of 3952909 is about 158.1147086680.

The spelling of 3952909 in words is "three million, nine hundred fifty-two thousand, nine hundred nine".