3825989 has 4 divisors (see below), whose sum is σ = 3949440. Its totient is φ = 3702540.

The previous prime is 3825979. The next prime is 3826001. The reversal of 3825989 is 9895283.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9895283 = 761 ⋅13003.

It is a cyclic number.

It is not a de Polignac number, because 3825989 - 2¹² = 3821893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3825919) 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, 61679 + ... + 61740.

It is an arithmetic number, because the mean of its divisors is an integer number (987360).

Almost surely, 2^3825989 is an apocalyptic number.

It is an amenable number.

3825989 is a deficient number, since it is larger than the sum of its proper divisors (123451).

3825989 is a wasteful number, since it uses less digits than its factorization.

3825989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123450.

The product of its digits is 155520, while the sum is 44.

The square root of 3825989 is about 1956.0135480103. The cubic root of 3825989 is about 156.4040179457.

The spelling of 3825989 in words is "three million, eight hundred twenty-five thousand, nine hundred eighty-nine".