243965967 has 16 divisors (see below), whose sum is σ = 376239360. Its totient is φ = 137728512.

The previous prime is 243965957. The next prime is 243965971. The reversal of 243965967 is 769569342.

It is not a de Polignac number, because 243965967 - 2¹² = 243961871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243965957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68242 + ... + 71727.

It is an arithmetic number, because the mean of its divisors is an integer number (23514960).

Almost surely, 2^243965967 is an apocalyptic number.

243965967 is a deficient number, since it is larger than the sum of its proper divisors (132273393).

243965967 is a wasteful number, since it uses less digits than its factorization.

243965967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140062.

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

The square root of 243965967 is about 15619.4099440408. The cubic root of 243965967 is about 624.8509229511.

The spelling of 243965967 in words is "two hundred forty-three million, nine hundred sixty-five thousand, nine hundred sixty-seven".