3968247 has 4 divisors (see below), whose sum is σ = 5291000. Its totient is φ = 2645496.

The previous prime is 3968231. The next prime is 3968291. The reversal of 3968247 is 7428693.

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

It is not a de Polignac number, because 3968247 - 2⁴ = 3968231 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968227) 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, 661372 + ... + 661377.

It is an arithmetic number, because the mean of its divisors is an integer number (1322750).

Almost surely, 2^3968247 is an apocalyptic number.

3968247 is a deficient number, since it is larger than the sum of its proper divisors (1322753).

3968247 is a wasteful number, since it uses less digits than its factorization.

3968247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322752.

The product of its digits is 72576, while the sum is 39.

The square root of 3968247 is about 1992.0459332054. The cubic root of 3968247 is about 158.3189492627.

It can be divided in two parts, 39 and 68247, that added together give a palindrome (68286).

The spelling of 3968247 in words is "three million, nine hundred sixty-eight thousand, two hundred forty-seven".