253900393393 has 2 divisors, whose sum is σ = 253900393394. Its totient is φ = 253900393392.

The previous prime is 253900393387. The next prime is 253900393429. The reversal of 253900393393 is 393393009352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247812804864 + 6087588529 = 497808^2 + 78023^2 .

It is a cyclic number.

It is not a de Polignac number, because 253900393393 - 2¹⁷ = 253900262321 is a prime.

It is not a weakly prime, because it can be changed into another prime (253900393093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126950196696 + 126950196697.

It is an arithmetic number, because the mean of its divisors is an integer number (126950196697).

Almost surely, 2^253900393393 is an apocalyptic number.

It is an amenable number.

253900393393 is a deficient number, since it is larger than the sum of its proper divisors (1).

253900393393 is an equidigital number, since it uses as much as digits as its factorization.

253900393393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1771470, while the sum is 49.

The spelling of 253900393393 in words is "two hundred fifty-three billion, nine hundred million, three hundred ninety-three thousand, three hundred ninety-three".