3960491906 has 16 divisors (see below), whose sum is σ = 6790251840. Its totient is φ = 1697144400.

The previous prime is 3960491903. The next prime is 3960491929. The reversal of 3960491906 is 6091940693.

It is a super-2 number, since 2×3960491906² = 31370992274983025672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3960491903) 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 7 ways as a sum of consecutive naturals, for example, 168581 + ... + 190631.

It is an arithmetic number, because the mean of its divisors is an integer number (424390740).

Almost surely, 2^3960491906 is an apocalyptic number.

3960491906 is a deficient number, since it is larger than the sum of its proper divisors (2829759934).

3960491906 is a wasteful number, since it uses less digits than its factorization.

3960491906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34889.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 3960491906 is about 62932.4392185779. The cubic root of 3960491906 is about 1582.1574844435.

The spelling of 3960491906 in words is "three billion, nine hundred sixty million, four hundred ninety-one thousand, nine hundred six".