3922247640 has 64 divisors (see below), whose sum is σ = 11876751360. Its totient is φ = 1036154240.

The previous prime is 3922247597. The next prime is 3922247677. The reversal of 3922247640 is 467422293.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 139896 + ... + 165575.

It is an arithmetic number, because the mean of its divisors is an integer number (185574240).

Almost surely, 2^3922247640 is an apocalyptic number.

3922247640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3922247640 is an abundant number, since it is smaller than the sum of its proper divisors (7954503720).

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

3922247640 is a wasteful number, since it uses less digits than its factorization.

3922247640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305592 (or 305588 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 3922247640 is about 62627.8503542953. The cubic root of 3922247640 is about 1577.0483321596.

The spelling of 3922247640 in words is "three billion, nine hundred twenty-two million, two hundred forty-seven thousand, six hundred forty".