3948362909 has 2 divisors, whose sum is σ = 3948362910. Its totient is φ = 3948362908.

The previous prime is 3948362881. The next prime is 3948362923. The reversal of 3948362909 is 9092638493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2916540025 + 1031822884 = 54005^2 + 32122^2 .

It is a cyclic number.

It is not a de Polignac number, because 3948362909 - 2⁸ = 3948362653 is a prime.

It is a super-2 number, since 2×3948362909² = 31179139322333884562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3948362939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974181454 + 1974181455.

It is an arithmetic number, because the mean of its divisors is an integer number (1974181455).

Almost surely, 2^3948362909 is an apocalyptic number.

It is an amenable number.

3948362909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3948362909 is an equidigital number, since it uses as much as digits as its factorization.

3948362909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 53.

The square root of 3948362909 is about 62836.0001034439. Note that the first 3 decimals coincide. The cubic root of 3948362909 is about 1580.5407150290.

The spelling of 3948362909 in words is "three billion, nine hundred forty-eight million, three hundred sixty-two thousand, nine hundred nine".