3925949 has 2 divisors, whose sum is σ = 3925950. Its totient is φ = 3925948.

The previous prime is 3925927. The next prime is 3925967. The reversal of 3925949 is 9495293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 96100 = 1957^2 + 310^2 .

It is an emirp because it is prime and its reverse (9495293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3925949 - 2⁸ = 3925693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3925969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1962974 + 1962975.

It is an arithmetic number, because the mean of its divisors is an integer number (1962975).

Almost surely, 2^3925949 is an apocalyptic number.

It is an amenable number.

3925949 is a deficient number, since it is larger than the sum of its proper divisors (1).

3925949 is an equidigital number, since it uses as much as digits as its factorization.

3925949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 41.

The square root of 3925949 is about 1981.4007671342. The cubic root of 3925949 is about 157.7544254307.

The spelling of 3925949 in words is "three million, nine hundred twenty-five thousand, nine hundred forty-nine".