1290039253 has 2 divisors, whose sum is σ = 1290039254. Its totient is φ = 1290039252.

The previous prime is 1290039241. The next prime is 1290039263. The reversal of 1290039253 is 3529300921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1255851844 + 34187409 = 35438^2 + 5847^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290039253 - 2⁹ = 1290038741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290039263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645019626 + 645019627.

It is an arithmetic number, because the mean of its divisors is an integer number (645019627).

Almost surely, 2^1290039253 is an apocalyptic number.

It is an amenable number.

1290039253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290039253 is an equidigital number, since it uses as much as digits as its factorization.

1290039253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 1290039253 is about 35917.1164349256. The cubic root of 1290039253 is about 1088.5982747659.

The spelling of 1290039253 in words is "one billion, two hundred ninety million, thirty-nine thousand, two hundred fifty-three".