245849887 has 2 divisors, whose sum is σ = 245849888. Its totient is φ = 245849886.

The previous prime is 245849843. The next prime is 245849897. The reversal of 245849887 is 788948542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245849887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245849837) 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 as a sum of consecutive naturals, namely, 122924943 + 122924944.

It is an arithmetic number, because the mean of its divisors is an integer number (122924944).

Almost surely, 2^245849887 is an apocalyptic number.

245849887 is a deficient number, since it is larger than the sum of its proper divisors (1).

245849887 is an equidigital number, since it uses as much as digits as its factorization.

245849887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5160960, while the sum is 55.

The square root of 245849887 is about 15679.6009834434. The cubic root of 245849887 is about 626.4551795346.

The spelling of 245849887 in words is "two hundred forty-five million, eight hundred forty-nine thousand, eight hundred eighty-seven".