289470812749 has 2 divisors, whose sum is σ = 289470812750. Its totient is φ = 289470812748.

The previous prime is 289470812731. The next prime is 289470812759. The reversal of 289470812749 is 947218074982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289275092649 + 195720100 = 537843^2 + 13990^2 .

It is a cyclic number.

It is not a de Polignac number, because 289470812749 - 2⁷ = 289470812621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289470812759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144735406374 + 144735406375.

It is an arithmetic number, because the mean of its divisors is an integer number (144735406375).

Almost surely, 2^289470812749 is an apocalyptic number.

It is an amenable number.

289470812749 is a deficient number, since it is larger than the sum of its proper divisors (1).

289470812749 is an equidigital number, since it uses as much as digits as its factorization.

289470812749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 289470812749 in words is "two hundred eighty-nine billion, four hundred seventy million, eight hundred twelve thousand, seven hundred forty-nine".