3870155 has 8 divisors (see below), whose sum is σ = 4655184. Its totient is φ = 3088800.

The previous prime is 3870149. The next prime is 3870157. The reversal of 3870155 is 5510783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3870155 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3870157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2720 + ... + 3890.

It is an arithmetic number, because the mean of its divisors is an integer number (581898).

Almost surely, 2^3870155 is an apocalyptic number.

3870155 is a deficient number, since it is larger than the sum of its proper divisors (785029).

3870155 is a wasteful number, since it uses less digits than its factorization.

3870155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 3870155 is about 1967.2709523601. The cubic root of 3870155 is about 157.0035429982.

The spelling of 3870155 in words is "three million, eight hundred seventy thousand, one hundred fifty-five".