253793909 has 2 divisors, whose sum is σ = 253793910. Its totient is φ = 253793908.

The previous prime is 253793893. The next prime is 253793927. The reversal of 253793909 is 909397352.

253793909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187827025 + 65966884 = 13705^2 + 8122^2 .

It is a cyclic number.

It is not a de Polignac number, because 253793909 - 2⁴ = 253793893 is a prime.

It is a super-2 number, since 2×253793909² = 128822696491000562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253793929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126896954 + 126896955.

It is an arithmetic number, because the mean of its divisors is an integer number (126896955).

Almost surely, 2^253793909 is an apocalyptic number.

It is an amenable number.

253793909 is a deficient number, since it is larger than the sum of its proper divisors (1).

253793909 is an equidigital number, since it uses as much as digits as its factorization.

253793909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 459270, while the sum is 47.

The square root of 253793909 is about 15930.9104887323. The cubic root of 253793909 is about 633.1312233825.

The spelling of 253793909 in words is "two hundred fifty-three million, seven hundred ninety-three thousand, nine hundred nine".