3969518 has 16 divisors (see below), whose sum is σ = 7163520. Its totient is φ = 1611576.

The previous prime is 3969503. The next prime is 3969527. The reversal of 3969518 is 8159693.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7196 + ... + 7727.

It is an arithmetic number, because the mean of its divisors is an integer number (447720).

Almost surely, 2^3969518 is an apocalyptic number.

3969518 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3969518 is a deficient number, since it is larger than the sum of its proper divisors (3194002).

3969518 is a wasteful number, since it uses less digits than its factorization.

3969518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14951.

The product of its digits is 58320, while the sum is 41.

The square root of 3969518 is about 1992.3649264128. The cubic root of 3969518 is about 158.3358502524.

The spelling of 3969518 in words is "three million, nine hundred sixty-nine thousand, five hundred eighteen".