3926297856 has 144 divisors (see below), whose sum is σ = 11290728960. Its totient is φ = 1204101120.

The previous prime is 3926297831. The next prime is 3926297899. The reversal of 3926297856 is 6587926293.

It is a junction number, because it is equal to n+sod(n) for n = 3926297796 and 3926297805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4781926 + ... + 4782746.

It is an arithmetic number, because the mean of its divisors is an integer number (78407840).

Almost surely, 2^3926297856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3926297856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5645364480).

3926297856 is an abundant number, since it is smaller than the sum of its proper divisors (7364431104).

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

3926297856 is a wasteful number, since it uses less digits than its factorization.

3926297856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1318 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 57.

The square root of 3926297856 is about 62660.1775931093. The cubic root of 3926297856 is about 1577.5909792708.

The spelling of 3926297856 in words is "three billion, nine hundred twenty-six million, two hundred ninety-seven thousand, eight hundred fifty-six".