3990910561 has 8 divisors (see below), whose sum is σ = 4355820000. Its totient is φ = 3626351040.

The previous prime is 3990910541. The next prime is 3990910571. The reversal of 3990910561 is 1650190993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3990910561 - 2¹⁷ = 3990779489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3990910541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63336 + ... + 109513.

It is an arithmetic number, because the mean of its divisors is an integer number (544477500).

Almost surely, 2^3990910561 is an apocalyptic number.

It is an amenable number.

3990910561 is a deficient number, since it is larger than the sum of its proper divisors (364909439).

3990910561 is a wasteful number, since it uses less digits than its factorization.

3990910561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174959.

The product of its (nonzero) digits is 65610, while the sum is 43.

The square root of 3990910561 is about 63173.6540101964. The cubic root of 3990910561 is about 1586.1977579826.

The spelling of 3990910561 in words is "three billion, nine hundred ninety million, nine hundred ten thousand, five hundred sixty-one".