3968397694 has 4 divisors (see below), whose sum is σ = 5952596544. Its totient is φ = 1984198846.

The previous prime is 3968397691. The next prime is 3968397721. The reversal of 3968397694 is 4967938693.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968397691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992099422 + ... + 992099425.

It is an arithmetic number, because the mean of its divisors is an integer number (1488149136).

Almost surely, 2^3968397694 is an apocalyptic number.

3968397694 is a deficient number, since it is larger than the sum of its proper divisors (1984198850).

3968397694 is a wasteful number, since it uses less digits than its factorization.

3968397694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984198849.

The product of its digits is 52907904, while the sum is 64.

The square root of 3968397694 is about 62995.2196122849. The cubic root of 3968397694 is about 1583.2095328897.

The spelling of 3968397694 in words is "three billion, nine hundred sixty-eight million, three hundred ninety-seven thousand, six hundred ninety-four".