3872860405 has 16 divisors (see below), whose sum is σ = 4860808704. Its totient is φ = 2956666240.

The previous prime is 3872860339. The next prime is 3872860447. The reversal of 3872860405 is 5040682783.

It is not a de Polignac number, because 3872860405 - 2¹¹ = 3872858357 is a prime.

It is a Duffinian 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, 10497 + ... + 88633.

It is an arithmetic number, because the mean of its divisors is an integer number (303800544).

Almost surely, 2^3872860405 is an apocalyptic number.

It is an amenable number.

3872860405 is a deficient number, since it is larger than the sum of its proper divisors (987948299).

3872860405 is a wasteful number, since it uses less digits than its factorization.

3872860405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78596.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 3872860405 is about 62232.3099764102. The cubic root of 3872860405 is about 1570.4011855601.

The spelling of 3872860405 in words is "three billion, eight hundred seventy-two million, eight hundred sixty thousand, four hundred five".