3915993 has 8 divisors (see below), whose sum is σ = 5332608. Its totient is φ = 2555024.

The previous prime is 3915979. The next prime is 3915997. The reversal of 3915993 is 3995193.

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 3915993 - 2¹³ = 3907801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3915997) 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, 13746 + ... + 14027.

It is an arithmetic number, because the mean of its divisors is an integer number (666576).

Almost surely, 2^3915993 is an apocalyptic number.

It is an amenable number.

3915993 is a deficient number, since it is larger than the sum of its proper divisors (1416615).

3915993 is a wasteful number, since it uses less digits than its factorization.

3915993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27823.

The product of its digits is 32805, while the sum is 39.

The square root of 3915993 is about 1978.8868082839. The cubic root of 3915993 is about 157.6209602406.

The spelling of 3915993 in words is "three million, nine hundred fifteen thousand, nine hundred ninety-three".