3867409920 has 160 divisors (see below), whose sum is σ = 13487886720. Its totient is φ = 937533440.

The previous prime is 3867409877. The next prime is 3867409961. The reversal of 3867409920 is 299047683.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 3867409920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61591 + ... + 107369.

It is an arithmetic number, because the mean of its divisors is an integer number (84299292).

Almost surely, 2^3867409920 is an apocalyptic number.

3867409920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3867409920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6743943360).

3867409920 is an abundant number, since it is smaller than the sum of its proper divisors (9620476800).

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

3867409920 is a wasteful number, since it uses less digits than its factorization.

3867409920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45816 (or 45800 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 3867409920 is about 62188.5031175377. The cubic root of 3867409920 is about 1569.6641363043.

The spelling of 3867409920 in words is "three billion, eight hundred sixty-seven million, four hundred nine thousand, nine hundred twenty".