3942047915 has 16 divisors (see below), whose sum is σ = 5096196000. Its totient is φ = 2909989632.

The previous prime is 3942047891. The next prime is 3942047953. The reversal of 3942047915 is 5197402493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3942047915 is a prime.

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, 199136 + ... + 218034.

It is an arithmetic number, because the mean of its divisors is an integer number (318512250).

Almost surely, 2^3942047915 is an apocalyptic number.

3942047915 is a deficient number, since it is larger than the sum of its proper divisors (1154148085).

3942047915 is a wasteful number, since it uses less digits than its factorization.

3942047915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22126.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 3942047915 is about 62785.7301860861. The cubic root of 3942047915 is about 1579.6976288065.

The spelling of 3942047915 in words is "three billion, nine hundred forty-two million, forty-seven thousand, nine hundred fifteen".