3904819 has 4 divisors (see below), whose sum is σ = 3916744. Its totient is φ = 3892896.

The previous prime is 3904801. The next prime is 3904829. The reversal of 3904819 is 9184093.

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 3904819 - 2¹⁷ = 3773747 is a prime.

It is a super-2 number, since 2×3904819² = 30495222845522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3904829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5457 + ... + 6130.

It is an arithmetic number, because the mean of its divisors is an integer number (979186).

Almost surely, 2^3904819 is an apocalyptic number.

3904819 is a deficient number, since it is larger than the sum of its proper divisors (11925).

3904819 is a wasteful number, since it uses less digits than its factorization.

3904819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11924.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 3904819 is about 1976.0614868976. The cubic root of 3904819 is about 157.4708974531.

The spelling of 3904819 in words is "three million, nine hundred four thousand, eight hundred nineteen".