3941217640 has 32 divisors (see below), whose sum is σ = 8949105000. Its totient is φ = 1562022144.

The previous prime is 3941217613. The next prime is 3941217667. The reversal of 3941217640 is 467121493.

It is an interprime number because it is at equal distance from previous prime (3941217613) and next prime (3941217667).

It can be written as a sum of positive squares in 4 ways, for example, as 3471802084 + 469415556 = 58922^2 + 21666^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3941217640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447615 + ... + 456334.

Almost surely, 2^3941217640 is an apocalyptic number.

It is an amenable number.

3941217640 is an abundant number, since it is smaller than the sum of its proper divisors (5007887360).

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

3941217640 is a wasteful number, since it uses less digits than its factorization.

3941217640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904069 (or 904065 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 3941217640 is about 62779.1178657362. The cubic root of 3941217640 is about 1579.5867155984.

The spelling of 3941217640 in words is "three billion, nine hundred forty-one million, two hundred seventeen thousand, six hundred forty".