249983033 has 4 divisors (see below), whose sum is σ = 254699748. Its totient is φ = 245266320.

The previous prime is 249983023. The next prime is 249983047. The reversal of 249983033 is 330389942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330389942 = 2 ⋅165194971.

It can be written as a sum of positive squares in 2 ways, for example, as 223891369 + 26091664 = 14963^2 + 5108^2 .

It is a cyclic number.

It is not a de Polignac number, because 249983033 - 2¹⁶ = 249917497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (249983003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2358278 + ... + 2358383.

It is an arithmetic number, because the mean of its divisors is an integer number (63674937).

Almost surely, 2^249983033 is an apocalyptic number.

It is an amenable number.

249983033 is a deficient number, since it is larger than the sum of its proper divisors (4716715).

249983033 is an equidigital number, since it uses as much as digits as its factorization.

249983033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716714.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 249983033 is about 15810.8517480875. The cubic root of 249983033 is about 629.9462732381.

The spelling of 249983033 in words is "two hundred forty-nine million, nine hundred eighty-three thousand, thirty-three".