3991150617 has 8 divisors (see below), whose sum is σ = 5451327840. Its totient is φ = 2595870240.

The previous prime is 3991150613. The next prime is 3991150661. The reversal of 3991150617 is 7160511993.

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

It is not a de Polignac number, because 3991150617 - 2² = 3991150613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3991150613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16224067 + ... + 16224312.

It is an arithmetic number, because the mean of its divisors is an integer number (681415980).

Almost surely, 2^3991150617 is an apocalyptic number.

It is an amenable number.

3991150617 is a deficient number, since it is larger than the sum of its proper divisors (1460177223).

3991150617 is a wasteful number, since it uses less digits than its factorization.

3991150617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32448423.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 3991150617 is about 63175.5539508757. The cubic root of 3991150617 is about 1586.2295609717.

The spelling of 3991150617 in words is "three billion, nine hundred ninety-one million, one hundred fifty thousand, six hundred seventeen".