20383249 has 2 divisors, whose sum is σ = 20383250. Its totient is φ = 20383248.

The previous prime is 20383229. The next prime is 20383277. The reversal of 20383249 is 94238302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19864849 + 518400 = 4457^2 + 720^2 .

It is a cyclic number.

It is not a de Polignac number, because 20383249 - 2¹¹ = 20381201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20383249.

It is not a weakly prime, because it can be changed into another prime (20383229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10191624 + 10191625.

It is an arithmetic number, because the mean of its divisors is an integer number (10191625).

Almost surely, 2^20383249 is an apocalyptic number.

It is an amenable number.

20383249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20383249 is an equidigital number, since it uses as much as digits as its factorization.

20383249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20383249 is about 4514.7811685618. The cubic root of 20383249 is about 273.1646329945.

The spelling of 20383249 in words is "twenty million, three hundred eighty-three thousand, two hundred forty-nine".