3991246622 has 8 divisors (see below), whose sum is σ = 6531130872. Its totient is φ = 1814203000.

The previous prime is 3991246613. The next prime is 3991246661. The reversal of 3991246622 is 2266421993.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90710129 + ... + 90710172.

It is an arithmetic number, because the mean of its divisors is an integer number (816391359).

Almost surely, 2^3991246622 is an apocalyptic number.

3991246622 is a deficient number, since it is larger than the sum of its proper divisors (2539884250).

3991246622 is a wasteful number, since it uses less digits than its factorization.

3991246622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181420314.

The product of its digits is 279936, while the sum is 44.

The square root of 3991246622 is about 63176.3137734389. The cubic root of 3991246622 is about 1586.2422795051.

The spelling of 3991246622 in words is "three billion, nine hundred ninety-one million, two hundred forty-six thousand, six hundred twenty-two".