249064679 has 4 divisors (see below), whose sum is σ = 249990840. Its totient is φ = 248138520.

The previous prime is 249064601. The next prime is 249064691. The reversal of 249064679 is 976460942.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249064679 - 2⁸ = 249064423 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 (249064579) 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 3 ways as a sum of consecutive naturals, for example, 462677 + ... + 463214.

It is an arithmetic number, because the mean of its divisors is an integer number (62497710).

Almost surely, 2^249064679 is an apocalyptic number.

249064679 is a deficient number, since it is larger than the sum of its proper divisors (926161).

249064679 is an equidigital number, since it uses as much as digits as its factorization.

249064679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926160.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 249064679 is about 15781.7831375292. The cubic root of 249064679 is about 629.1739227521.

The spelling of 249064679 in words is "two hundred forty-nine million, sixty-four thousand, six hundred seventy-nine".