3948391268 has 6 divisors (see below), whose sum is σ = 6909684726. Its totient is φ = 1974195632.

The previous prime is 3948391243. The next prime is 3948391303. The reversal of 3948391268 is 8621938493.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3922767424 + 25623844 = 62632^2 + 5062^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493548905 + ... + 493548912.

It is an arithmetic number, because the mean of its divisors is an integer number (1151614121).

Almost surely, 2^3948391268 is an apocalyptic number.

It is an amenable number.

3948391268 is a deficient number, since it is larger than the sum of its proper divisors (2961293458).

3948391268 is a wasteful number, since it uses less digits than its factorization.

3948391268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987097821 (or 987097819 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The square root of 3948391268 is about 62836.2257618963. The cubic root of 3948391268 is about 1580.5444990823.

The spelling of 3948391268 in words is "three billion, nine hundred forty-eight million, three hundred ninety-one thousand, two hundred sixty-eight".