3930187 has 4 divisors (see below), whose sum is σ = 4013856. Its totient is φ = 3846520.

The previous prime is 3930139. The next prime is 3930191. The reversal of 3930187 is 7810393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7810393 = 233 ⋅33521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3930187 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3930197) 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, 41764 + ... + 41857.

It is an arithmetic number, because the mean of its divisors is an integer number (1003464).

Almost surely, 2^3930187 is an apocalyptic number.

3930187 is a deficient number, since it is larger than the sum of its proper divisors (83669).

3930187 is an equidigital number, since it uses as much as digits as its factorization.

3930187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83668.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 3930187 is about 1982.4699241098. The cubic root of 3930187 is about 157.8111694885.

The spelling of 3930187 in words is "three million, nine hundred thirty thousand, one hundred eighty-seven".