3996859 has 4 divisors (see below), whose sum is σ = 4207240. Its totient is φ = 3786480.

The previous prime is 3996857. The next prime is 3996869. The reversal of 3996859 is 9586993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3996859 - 2¹ = 3996857 is a prime.

It is a super-3 number, since 3×3996859³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3996857) 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, 105162 + ... + 105199.

It is an arithmetic number, because the mean of its divisors is an integer number (1051810).

Almost surely, 2^3996859 is an apocalyptic number.

3996859 is a deficient number, since it is larger than the sum of its proper divisors (210381).

3996859 is a wasteful number, since it uses less digits than its factorization.

3996859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210380.

The product of its digits is 524880, while the sum is 49.

The square root of 3996859 is about 1999.2145957851. The cubic root of 3996859 is about 158.6985440938.

The spelling of 3996859 in words is "three million, nine hundred ninety-six thousand, eight hundred fifty-nine".