249769930 has 8 divisors (see below), whose sum is σ = 449585892. Its totient is φ = 99907968.

The previous prime is 249769913. The next prime is 249769957. The reversal of 249769930 is 39967942.

It can be written as a sum of positive squares in 2 ways, for example, as 237498921 + 12271009 = 15411^2 + 3503^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12488487 + ... + 12488506.

Almost surely, 2^249769930 is an apocalyptic number.

249769930 is a deficient number, since it is larger than the sum of its proper divisors (199815962).

249769930 is a wasteful number, since it uses less digits than its factorization.

249769930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24977000.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 249769930 is about 15804.1111739952. Note that the first 4 decimals coincide. The cubic root of 249769930 is about 629.7672189461.

It can be divided in two parts, 2497 and 69930, that added together give a palindrome (72427).

The spelling of 249769930 in words is "two hundred forty-nine million, seven hundred sixty-nine thousand, nine hundred thirty".