3907949 has 2 divisors, whose sum is σ = 3907950. Its totient is φ = 3907948.

The previous prime is 3907933. The next prime is 3907951. The reversal of 3907949 is 9497093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3541924 + 366025 = 1882^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 3907949 - 2⁴ = 3907933 is a prime.

Together with 3907951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3907919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953974 + 1953975.

It is an arithmetic number, because the mean of its divisors is an integer number (1953975).

Almost surely, 2^3907949 is an apocalyptic number.

It is an amenable number.

3907949 is a deficient number, since it is larger than the sum of its proper divisors (1).

3907949 is an equidigital number, since it uses as much as digits as its factorization.

3907949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 3907949 is about 1976.8533076584. The cubic root of 3907949 is about 157.5129610565.

The spelling of 3907949 in words is "three million, nine hundred seven thousand, nine hundred forty-nine".