249445967 has 8 divisors (see below), whose sum is σ = 260679936. Its totient is φ = 238459032.

The previous prime is 249445951. The next prime is 249445969. The reversal of 249445967 is 769544942.

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

It is a cyclic number.

It is not a de Polignac number, because 249445967 - 2⁴ = 249445951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249445969) 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 in 7 ways as a sum of consecutive naturals, for example, 59693 + ... + 63734.

It is an arithmetic number, because the mean of its divisors is an integer number (32584992).

Almost surely, 2^249445967 is an apocalyptic number.

249445967 is a deficient number, since it is larger than the sum of its proper divisors (11233969).

249445967 is a wasteful number, since it uses less digits than its factorization.

249445967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123517.

The product of its digits is 2177280, while the sum is 50.

The square root of 249445967 is about 15793.8585215900. The cubic root of 249445967 is about 629.4948221989.

The spelling of 249445967 in words is "two hundred forty-nine million, four hundred forty-five thousand, nine hundred sixty-seven".