5261423989 has 2 divisors, whose sum is σ = 5261423990. Its totient is φ = 5261423988.

The previous prime is 5261423957. The next prime is 5261424043. The reversal of 5261423989 is 9893241625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5100387889 + 161036100 = 71417^2 + 12690^2 .

It is a cyclic number.

It is not a de Polignac number, because 5261423989 - 2⁵ = 5261423957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5261463989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630711994 + 2630711995.

It is an arithmetic number, because the mean of its divisors is an integer number (2630711995).

Almost surely, 2^5261423989 is an apocalyptic number.

It is an amenable number.

5261423989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5261423989 is an equidigital number, since it uses as much as digits as its factorization.

5261423989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 49.

The square root of 5261423989 is about 72535.6739060168. The cubic root of 5261423989 is about 1739.2730469480.

The spelling of 5261423989 in words is "five billion, two hundred sixty-one million, four hundred twenty-three thousand, nine hundred eighty-nine".