3826991 has 8 divisors (see below), whose sum is σ = 4417824. Its totient is φ = 3247200.

The previous prime is 3826967. The next prime is 3827003. The reversal of 3826991 is 1996283.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3826991 is a prime.

It is a super-2 number, since 2×3826991² = 29291720228162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3826931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2000 + ... + 3413.

It is an arithmetic number, because the mean of its divisors is an integer number (552228).

Almost surely, 2^3826991 is an apocalyptic number.

3826991 is a deficient number, since it is larger than the sum of its proper divisors (590833).

3826991 is a wasteful number, since it uses less digits than its factorization.

3826991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521.

The product of its digits is 23328, while the sum is 38.

The square root of 3826991 is about 1956.2696644379. The cubic root of 3826991 is about 156.4176704633.

The spelling of 3826991 in words is "three million, eight hundred twenty-six thousand, nine hundred ninety-one".