3961690 has 32 divisors (see below), whose sum is σ = 7776000. Its totient is φ = 1447488.

The previous prime is 3961669. The next prime is 3961691. The reversal of 3961690 is 961693.

It is a super-2 number, since 2×3961690² = 31389975312200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3961691) 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 15 ways as a sum of consecutive naturals, for example, 5151 + ... + 5869.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

Almost surely, 2^3961690 is an apocalyptic number.

3961690 is a deficient number, since it is larger than the sum of its proper divisors (3814310).

3961690 is a wasteful number, since it uses less digits than its factorization.

3961690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 3961690 is about 1990.3994573954. The cubic root of 3961690 is about 158.2317008590.

The spelling of 3961690 in words is "three million, nine hundred sixty-one thousand, six hundred ninety".