20489003 has 2 divisors, whose sum is σ = 20489004. Its totient is φ = 20489002.

The previous prime is 20488999. The next prime is 20489023. The reversal of 20489003 is 30098402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20489003 - 2² = 20488999 is a prime.

It is not a weakly prime, because it can be changed into another prime (20489023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10244501 + 10244502.

It is an arithmetic number, because the mean of its divisors is an integer number (10244502).

Almost surely, 2^20489003 is an apocalyptic number.

20489003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20489003 is an equidigital number, since it uses as much as digits as its factorization.

20489003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20489003 is about 4526.4779906678. The cubic root of 20489003 is about 273.6362365155.

The spelling of 20489003 in words is "twenty million, four hundred eighty-nine thousand, three".