3989291491 has 8 divisors (see below), whose sum is σ = 4021242624. Its totient is φ = 3957436680.

The previous prime is 3989291489. The next prime is 3989291563. The reversal of 3989291491 is 1941929893.

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 3989291491 - 2¹ = 3989291489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3989291441) 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, 60256 + ... + 107746.

It is an arithmetic number, because the mean of its divisors is an integer number (502655328).

Almost surely, 2^3989291491 is an apocalyptic number.

3989291491 is a deficient number, since it is larger than the sum of its proper divisors (31951133).

3989291491 is a wasteful number, since it uses less digits than its factorization.

3989291491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48161.

The product of its digits is 1259712, while the sum is 55.

The square root of 3989291491 is about 63160.8382702446. The cubic root of 3989291491 is about 1585.9832277783.

The spelling of 3989291491 in words is "three billion, nine hundred eighty-nine million, two hundred ninety-one thousand, four hundred ninety-one".