3870397915 has 8 divisors (see below), whose sum is σ = 4648979808. Its totient is φ = 3093316800.

The previous prime is 3870397891. The next prime is 3870397931. The reversal of 3870397915 is 5197930783.

It is a happy number.

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

It is not a de Polignac number, because 3870397915 - 2¹³ = 3870389723 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 369511 + ... + 379840.

It is an arithmetic number, because the mean of its divisors is an integer number (581122476).

Almost surely, 2^3870397915 is an apocalyptic number.

3870397915 is a deficient number, since it is larger than the sum of its proper divisors (778581893).

3870397915 is a wasteful number, since it uses less digits than its factorization.

3870397915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750389.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The square root of 3870397915 is about 62212.5221719872. The cubic root of 3870397915 is about 1570.0682776911.

The spelling of 3870397915 in words is "three billion, eight hundred seventy million, three hundred ninety-seven thousand, nine hundred fifteen".