3966622540 has 12 divisors (see below), whose sum is σ = 8329907376. Its totient is φ = 1586649008.

The previous prime is 3966622537. The next prime is 3966622547. The reversal of 3966622540 is 452266693.

It is not an unprimeable number, because it can be changed into a prime (3966622547) 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 3 ways as a sum of consecutive naturals, for example, 99165544 + ... + 99165583.

It is an arithmetic number, because the mean of its divisors is an integer number (694158948).

Almost surely, 2^3966622540 is an apocalyptic number.

It is an amenable number.

3966622540 is an abundant number, since it is smaller than the sum of its proper divisors (4363284836).

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

3966622540 is a wasteful number, since it uses less digits than its factorization.

3966622540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198331136 (or 198331134 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 3966622540 is about 62981.1284433679. The cubic root of 3966622540 is about 1582.9734292098.

The spelling of 3966622540 in words is "three billion, nine hundred sixty-six million, six hundred twenty-two thousand, five hundred forty".