3915384997 has 4 divisors (see below), whose sum is σ = 3933941536. Its totient is φ = 3896828460.

The previous prime is 3915384989. The next prime is 3915385027. The reversal of 3915384997 is 7994835193.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7994835193 = 10211 ⋅782963.

It is a cyclic number.

It is not a de Polignac number, because 3915384997 - 2³ = 3915384989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3915384947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9277953 + ... + 9278374.

It is an arithmetic number, because the mean of its divisors is an integer number (983485384).

Almost surely, 2^3915384997 is an apocalyptic number.

It is an amenable number.

3915384997 is a deficient number, since it is larger than the sum of its proper divisors (18556539).

3915384997 is a wasteful number, since it uses less digits than its factorization.

3915384997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18556538.

The product of its digits is 7348320, while the sum is 58.

The square root of 3915384997 is about 62573.0373004220. The cubic root of 3915384997 is about 1576.1280232874.

The spelling of 3915384997 in words is "three billion, nine hundred fifteen million, three hundred eighty-four thousand, nine hundred ninety-seven".