3942969217 has 8 divisors (see below), whose sum is σ = 4303540800. Its totient is φ = 3582750960.

The previous prime is 3942969211. The next prime is 3942969223. The reversal of 3942969217 is 7129692493.

It is a happy number.

3942969217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3942969211) and next prime (3942969223).

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

It is a cyclic number.

It is not a de Polignac number, because 3942969217 - 2⁷ = 3942969089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3942969211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64717 + ... + 109882.

It is an arithmetic number, because the mean of its divisors is an integer number (537942600).

Almost surely, 2^3942969217 is an apocalyptic number.

It is an amenable number.

3942969217 is a deficient number, since it is larger than the sum of its proper divisors (360571583).

3942969217 is a wasteful number, since it uses less digits than its factorization.

3942969217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176663.

The product of its digits is 1469664, while the sum is 52.

The square root of 3942969217 is about 62793.0666315956. The cubic root of 3942969217 is about 1579.8206837305.

The spelling of 3942969217 in words is "three billion, nine hundred forty-two million, nine hundred sixty-nine thousand, two hundred seventeen".