245744969 has 4 divisors (see below), whose sum is σ = 247999620. Its totient is φ = 243490320.

The previous prime is 245744963. The next prime is 245744981. The reversal of 245744969 is 969447542.

245744969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 95804944 + 149940025 = 9788^2 + 12245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245744969 is a prime.

It is a super-2 number, since 2×245744969² = 120781179577621922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245744963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127162 + ... + 1127379.

It is an arithmetic number, because the mean of its divisors is an integer number (61999905).

Almost surely, 2^245744969 is an apocalyptic number.

It is an amenable number.

245744969 is a deficient number, since it is larger than the sum of its proper divisors (2254651).

245744969 is a wasteful number, since it uses less digits than its factorization.

245744969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254650.

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

The square root of 245744969 is about 15676.2549417901. The cubic root of 245744969 is about 626.3660522799.

The spelling of 245744969 in words is "two hundred forty-five million, seven hundred forty-four thousand, nine hundred sixty-nine".