245046869 has 2 divisors, whose sum is σ = 245046870. Its totient is φ = 245046868.

The previous prime is 245046863. The next prime is 245046887. The reversal of 245046869 is 968640542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195160900 + 49885969 = 13970^2 + 7063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245046869 is a prime.

It is a super-2 number, since 2×245046869² = 120095936013406322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245046863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122523434 + 122523435.

It is an arithmetic number, because the mean of its divisors is an integer number (122523435).

Almost surely, 2^245046869 is an apocalyptic number.

It is an amenable number.

245046869 is a deficient number, since it is larger than the sum of its proper divisors (1).

245046869 is an equidigital number, since it uses as much as digits as its factorization.

245046869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 245046869 is about 15653.9729461885. The cubic root of 245046869 is about 625.7723733233.

The spelling of 245046869 in words is "two hundred forty-five million, forty-six thousand, eight hundred sixty-nine".