245746939 has 2 divisors, whose sum is σ = 245746940. Its totient is φ = 245746938.

The previous prime is 245746873. The next prime is 245746997. The reversal of 245746939 is 939647542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245746939 - 2⁷ = 245746811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245746892 and 245746901.

It is not a weakly prime, because it can be changed into another prime (245741939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122873469 + 122873470.

It is an arithmetic number, because the mean of its divisors is an integer number (122873470).

Almost surely, 2^245746939 is an apocalyptic number.

245746939 is a deficient number, since it is larger than the sum of its proper divisors (1).

245746939 is an equidigital number, since it uses as much as digits as its factorization.

245746939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 49.

The square root of 245746939 is about 15676.3177755492. The cubic root of 245746939 is about 626.3677260176.

It can be divided in two parts, 24574 and 6939, that added together give a palindrome (31513).

The spelling of 245746939 in words is "two hundred forty-five million, seven hundred forty-six thousand, nine hundred thirty-nine".