3968919 has 12 divisors (see below), whose sum is σ = 5945576. Its totient is φ = 2645784.

The previous prime is 3968917. The next prime is 3968941. The reversal of 3968919 is 9198693.

It is not a de Polignac number, because 3968919 - 2¹ = 3968917 is a prime.

It is a super-2 number, since 2×3968919² = 31504636057122, which contains 22 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 (3968917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7924 + ... + 8409.

Almost surely, 2^3968919 is an apocalyptic number.

3968919 is a deficient number, since it is larger than the sum of its proper divisors (1976657).

3968919 is an equidigital number, since it uses as much as digits as its factorization.

3968919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16348 (or 16336 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 3968919 is about 1992.2145968745. The cubic root of 3968919 is about 158.3278855620.

It can be divided in two parts, 396891 and 9, that added together give a square (396900 = 630²).

The spelling of 3968919 in words is "three million, nine hundred sixty-eight thousand, nine hundred nineteen".