3854989 has 2 divisors, whose sum is σ = 3854990. Its totient is φ = 3854988.

The previous prime is 3854969. The next prime is 3855013. The reversal of 3854989 is 9894583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2125764 + 1729225 = 1458^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 3854989 - 2⁵ = 3854957 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3854969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927494 + 1927495.

It is an arithmetic number, because the mean of its divisors is an integer number (1927495).

Almost surely, 2^3854989 is an apocalyptic number.

It is an amenable number.

3854989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3854989 is an equidigital number, since it uses as much as digits as its factorization.

3854989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 46.

The square root of 3854989 is about 1963.4125903640. The cubic root of 3854989 is about 156.7981909456.

The spelling of 3854989 in words is "three million, eight hundred fifty-four thousand, nine hundred eighty-nine".