3879879640 has 64 divisors (see below), whose sum is σ = 10744292160. Its totient is φ = 1227916800.

The previous prime is 3879879631. The next prime is 3879879649. The reversal of 3879879640 is 469789783.

It is an interprime number because it is at equal distance from previous prime (3879879631) and next prime (3879879649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3879879649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529311 + ... + 536590.

It is an arithmetic number, because the mean of its divisors is an integer number (167879565).

Almost surely, 2^3879879640 is an apocalyptic number.

It is an amenable number.

3879879640 is an abundant number, since it is smaller than the sum of its proper divisors (6864412520).

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

3879879640 is a wasteful number, since it uses less digits than its factorization.

3879879640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065932 (or 1065928 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The square root of 3879879640 is about 62288.6798704227. The cubic root of 3879879640 is about 1571.3493531573.

The spelling of 3879879640 in words is "three billion, eight hundred seventy-nine million, eight hundred seventy-nine thousand, six hundred forty".