3975890 has 8 divisors (see below), whose sum is σ = 7156620. Its totient is φ = 1590352.

The previous prime is 3975887. The next prime is 3975911. The reversal of 3975890 is 985793.

It can be written as a sum of positive squares in 2 ways, for example, as 3924361 + 51529 = 1981^2 + 227^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198785 + ... + 198804.

Almost surely, 2^3975890 is an apocalyptic number.

3975890 is a deficient number, since it is larger than the sum of its proper divisors (3180730).

3975890 is a wasteful number, since it uses less digits than its factorization.

3975890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397596.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 3975890 is about 1993.9633898344. The cubic root of 3975890 is about 158.4205269201.

The spelling of 3975890 in words is "three million, nine hundred seventy-five thousand, eight hundred ninety".