249394843 has 2 divisors, whose sum is σ = 249394844. Its totient is φ = 249394842.

The previous prime is 249394801. The next prime is 249394889. The reversal of 249394843 is 348493942.

It is an a-pointer prime, because the next prime (249394889) can be obtained adding 249394843 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249394843 - 2¹⁷ = 249263771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249394793 and 249394802.

It is not a weakly prime, because it can be changed into another prime (249394043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124697421 + 124697422.

It is an arithmetic number, because the mean of its divisors is an integer number (124697422).

Almost surely, 2^249394843 is an apocalyptic number.

249394843 is a deficient number, since it is larger than the sum of its proper divisors (1).

249394843 is an equidigital number, since it uses as much as digits as its factorization.

249394843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 46.

The square root of 249394843 is about 15792.2399614494. The cubic root of 249394843 is about 629.4518142314.

Subtracting 249394843 from its reverse (348493942), we obtain a palindrome (99099099).

It can be divided in two parts, 2493 and 94843, that added together give a cube (97336 = 46³).

The spelling of 249394843 in words is "two hundred forty-nine million, three hundred ninety-four thousand, eight hundred forty-three".