253994969 has 2 divisors, whose sum is σ = 253994970. Its totient is φ = 253994968.

The previous prime is 253994933. The next prime is 253994989. The reversal of 253994969 is 969499352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251064025 + 2930944 = 15845^2 + 1712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253994969 is a prime.

It is a super-2 number, since 2×253994969² = 129026888554621922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (253994929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126997484 + 126997485.

It is an arithmetic number, because the mean of its divisors is an integer number (126997485).

Almost surely, 2^253994969 is an apocalyptic number.

It is an amenable number.

253994969 is a deficient number, since it is larger than the sum of its proper divisors (1).

253994969 is an equidigital number, since it uses as much as digits as its factorization.

253994969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4723920, while the sum is 56.

The square root of 253994969 is about 15937.2196132199. The cubic root of 253994969 is about 633.2983718158.

The spelling of 253994969 in words is "two hundred fifty-three million, nine hundred ninety-four thousand, nine hundred sixty-nine".