3968398447 has 4 divisors (see below), whose sum is σ = 4273659880. Its totient is φ = 3663137016.

The previous prime is 3968398429. The next prime is 3968398459. The reversal of 3968398447 is 7448938693.

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

It is a cyclic number.

It is not a de Polignac number, because 3968398447 - 2¹⁹ = 3967874159 is a prime.

It is a super-3 number, since 3×3968398447³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968399447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152630697 + ... + 152630722.

It is an arithmetic number, because the mean of its divisors is an integer number (1068414970).

Almost surely, 2^3968398447 is an apocalyptic number.

3968398447 is a deficient number, since it is larger than the sum of its proper divisors (305261433).

3968398447 is a wasteful number, since it uses less digits than its factorization.

3968398447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305261432.

The product of its digits is 31352832, while the sum is 61.

The square root of 3968398447 is about 62995.2255889286. The cubic root of 3968398447 is about 1583.2096330273.

The spelling of 3968398447 in words is "three billion, nine hundred sixty-eight million, three hundred ninety-eight thousand, four hundred forty-seven".