3948046640 has 40 divisors (see below), whose sum is σ = 9181897440. Its totient is φ = 1578756096.

The previous prime is 3948046639. The next prime is 3948046657. The reversal of 3948046640 is 466408493.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3948046591 and 3948046600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437696 + ... + 446624.

It is an arithmetic number, because the mean of its divisors is an integer number (229547436).

Almost surely, 2^3948046640 is an apocalyptic number.

It is an amenable number.

3948046640 is an abundant number, since it is smaller than the sum of its proper divisors (5233850800).

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

3948046640 is a wasteful number, since it uses less digits than its factorization.

3948046640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14469 (or 14463 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The square root of 3948046640 is about 62833.4834304131. The cubic root of 3948046640 is about 1580.4985127804.

The spelling of 3948046640 in words is "three billion, nine hundred forty-eight million, forty-six thousand, six hundred forty".