3996249091 has 4 divisors (see below), whose sum is σ = 4125160384. Its totient is φ = 3867337800.

The previous prime is 3996249071. The next prime is 3996249163. The reversal of 3996249091 is 1909426993.

3996249091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3996249091 - 2¹¹ = 3996247043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3996249071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64455600 + ... + 64455661.

It is an arithmetic number, because the mean of its divisors is an integer number (1031290096).

Almost surely, 2^3996249091 is an apocalyptic number.

3996249091 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3996249091 is a deficient number, since it is larger than the sum of its proper divisors (128911293).

3996249091 is a wasteful number, since it uses less digits than its factorization.

3996249091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128911292.

The product of its (nonzero) digits is 944784, while the sum is 52.

The square root of 3996249091 is about 63215.8927090332. The cubic root of 3996249091 is about 1586.9047137182.

The spelling of 3996249091 in words is "three billion, nine hundred ninety-six million, two hundred forty-nine thousand, ninety-one".