4731989 has 2 divisors, whose sum is σ = 4731990. Its totient is φ = 4731988.

The previous prime is 4731983. The next prime is 4732003. The reversal of 4731989 is 9891374.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4695889 + 36100 = 2167^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 4731989 - 2⁴ = 4731973 is a prime.

It is a super-2 number, since 2×4731989² = 44783439792242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4731983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2365994 + 2365995.

It is an arithmetic number, because the mean of its divisors is an integer number (2365995).

Almost surely, 2^4731989 is an apocalyptic number.

It is an amenable number.

4731989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4731989 is an equidigital number, since it uses as much as digits as its factorization.

4731989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 4731989 is about 2175.3135406189. The cubic root of 4731989 is about 167.8860361826.

The spelling of 4731989 in words is "four million, seven hundred thirty-one thousand, nine hundred eighty-nine".