3906990811 has 2 divisors, whose sum is σ = 3906990812. Its totient is φ = 3906990810.

The previous prime is 3906990799. The next prime is 3906990823. The reversal of 3906990811 is 1180996093.

It is a balanced prime because it is at equal distance from previous prime (3906990799) and next prime (3906990823).

It is an emirp because it is prime and its reverse (1180996093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3906990811 - 2⁷ = 3906990683 is a prime.

It is not a weakly prime, because it can be changed into another prime (3906990851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953495405 + 1953495406.

It is an arithmetic number, because the mean of its divisors is an integer number (1953495406).

Almost surely, 2^3906990811 is an apocalyptic number.

3906990811 is the 27954-th centered decagonal number.

3906990811 is a deficient number, since it is larger than the sum of its proper divisors (1).

3906990811 is an equidigital number, since it uses as much as digits as its factorization.

3906990811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 3906990811 is about 62505.9262070406. The cubic root of 3906990811 is about 1575.0008648353. Note that the first 3 decimals are identical.

The spelling of 3906990811 in words is "three billion, nine hundred six million, nine hundred ninety thousand, eight hundred eleven".