283920949 has 8 divisors (see below), whose sum is σ = 307347992. Its totient is φ = 260720640.

The previous prime is 283920929. The next prime is 283920997. The reversal of 283920949 is 949029382.

It can be written as a sum of positive squares in 4 ways, for example, as 20994724 + 262926225 = 4582^2 + 16215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 283920949 - 2¹⁹ = 283396661 is a prime.

It is a super-2 number, since 2×283920949² = 161222210562121202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 283920899 and 283920908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283920929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54072 + ... + 59089.

It is an arithmetic number, because the mean of its divisors is an integer number (38418499).

Almost surely, 2^283920949 is an apocalyptic number.

It is an amenable number.

283920949 is a deficient number, since it is larger than the sum of its proper divisors (23427043).

283920949 is a wasteful number, since it uses less digits than its factorization.

283920949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113367.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 283920949 is about 16849.9539761983. The cubic root of 283920949 is about 657.2528520238.

The spelling of 283920949 in words is "two hundred eighty-three million, nine hundred twenty thousand, nine hundred forty-nine".