3894221508 has 24 divisors (see below), whose sum is σ = 9089515680. Its totient is φ = 1297645440.

The previous prime is 3894221479. The next prime is 3894221509. The reversal of 3894221508 is 8051224983.

It is a super-2 number, since 2×3894221508² = 30329922306739588128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3894221508.

It is not an unprimeable number, because it can be changed into a prime (3894221509) 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, 14538 + ... + 89441.

It is an arithmetic number, because the mean of its divisors is an integer number (378729820).

Almost surely, 2^3894221508 is an apocalyptic number.

It is an amenable number.

3894221508 is an abundant number, since it is smaller than the sum of its proper divisors (5195294172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3894221508 is a wasteful number, since it uses less digits than its factorization.

3894221508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107107 (or 107105 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 3894221508 is about 62403.6978711999. The cubic root of 3894221508 is about 1573.2831222405.

The spelling of 3894221508 in words is "three billion, eight hundred ninety-four million, two hundred twenty-one thousand, five hundred eight".