3889631 has 2 divisors, whose sum is σ = 3889632. Its totient is φ = 3889630.

The previous prime is 3889621. The next prime is 3889649. The reversal of 3889631 is 1369883.

It is a weak prime.

It is an emirp because it is prime and its reverse (1369883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3889631 - 2¹⁰ = 3888607 is a prime.

It is a super-2 number, since 2×3889631² = 30258458632322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3889621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944815 + 1944816.

It is an arithmetic number, because the mean of its divisors is an integer number (1944816).

Almost surely, 2^3889631 is an apocalyptic number.

3889631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3889631 is an equidigital number, since it uses as much as digits as its factorization.

3889631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 3889631 is about 1972.2147448998. The cubic root of 3889631 is about 157.2664683833.

The spelling of 3889631 in words is "three million, eight hundred eighty-nine thousand, six hundred thirty-one".