249720963 has 8 divisors (see below), whose sum is σ = 334687248. Its totient is φ = 165617664.

The previous prime is 249720949. The next prime is 249720967. The reversal of 249720963 is 369027942.

It is a happy number.

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

It is not a de Polignac number, because 249720963 - 2⁶ = 249720899 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (249720967) 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, 215070 + ... + 216227.

It is an arithmetic number, because the mean of its divisors is an integer number (41835906).

Almost surely, 2^249720963 is an apocalyptic number.

249720963 is a deficient number, since it is larger than the sum of its proper divisors (84966285).

249720963 is a wasteful number, since it uses less digits than its factorization.

249720963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431493.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 249720963 is about 15802.5619125508. The cubic root of 249720963 is about 629.7260613004.

The spelling of 249720963 in words is "two hundred forty-nine million, seven hundred twenty thousand, nine hundred sixty-three".