249769563 has 8 divisors (see below), whose sum is σ = 338485776. Its totient is φ = 163783200.

The previous prime is 249769537. The next prime is 249769571. The reversal of 249769563 is 365967942.

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

It is not a de Polignac number, because 249769563 - 2¹³ = 249761371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249769523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682248 + ... + 682613.

It is an arithmetic number, because the mean of its divisors is an integer number (42310722).

Almost surely, 2^249769563 is an apocalyptic number.

249769563 is a deficient number, since it is larger than the sum of its proper divisors (88716213).

249769563 is a wasteful number, since it uses less digits than its factorization.

249769563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364925.

The product of its digits is 2449440, while the sum is 51.

The square root of 249769563 is about 15804.0995630881. The cubic root of 249769563 is about 629.7669104960.

The spelling of 249769563 in words is "two hundred forty-nine million, seven hundred sixty-nine thousand, five hundred sixty-three".