3964786491 has 8 divisors (see below), whose sum is σ = 5409321280. Its totient is φ = 2581721352.

The previous prime is 3964786481. The next prime is 3964786499. The reversal of 3964786491 is 1946874693.

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

It is not a de Polignac number, because 3964786491 - 2¹⁰ = 3964785467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3964786499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15367261 + ... + 15367518.

It is an arithmetic number, because the mean of its divisors is an integer number (676165160).

Almost surely, 2^3964786491 is an apocalyptic number.

3964786491 is a deficient number, since it is larger than the sum of its proper divisors (1444534789).

3964786491 is a wasteful number, since it uses less digits than its factorization.

3964786491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30734825.

The product of its digits is 7838208, while the sum is 57.

The square root of 3964786491 is about 62966.5505725064. The cubic root of 3964786491 is about 1582.7291520947.

The spelling of 3964786491 in words is "three billion, nine hundred sixty-four million, seven hundred eighty-six thousand, four hundred ninety-one".