3945932417 has 24 divisors (see below), whose sum is σ = 4824388800. Its totient is φ = 3211772256.

The previous prime is 3945932413. The next prime is 3945932461. The reversal of 3945932417 is 7142395493.

It is a happy number.

It is not a de Polignac number, because 3945932417 - 2² = 3945932413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3945932413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144059 + ... + 169247.

It is an arithmetic number, because the mean of its divisors is an integer number (201016200).

Almost surely, 2^3945932417 is an apocalyptic number.

It is an amenable number.

3945932417 is a deficient number, since it is larger than the sum of its proper divisors (878456383).

3945932417 is a wasteful number, since it uses less digits than its factorization.

3945932417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25365 (or 25358 counting only the distinct ones).

The product of its digits is 816480, while the sum is 47.

The square root of 3945932417 is about 62816.6571619344. The cubic root of 3945932417 is about 1580.2163375459.

The spelling of 3945932417 in words is "three billion, nine hundred forty-five million, nine hundred thirty-two thousand, four hundred seventeen".