2420867989 has 2 divisors, whose sum is σ = 2420867990. Its totient is φ = 2420867988.

The previous prime is 2420867951. The next prime is 2420867993. The reversal of 2420867989 is 9897680242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2417688900 + 3179089 = 49170^2 + 1783^2 .

It is a cyclic number.

It is not a de Polignac number, because 2420867989 - 2¹³ = 2420859797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2420867929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210433994 + 1210433995.

It is an arithmetic number, because the mean of its divisors is an integer number (1210433995).

Almost surely, 2^2420867989 is an apocalyptic number.

It is an amenable number.

2420867989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2420867989 is an equidigital number, since it uses as much as digits as its factorization.

2420867989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The square root of 2420867989 is about 49202.3169068287. The cubic root of 2420867989 is about 1342.7351848903.

The spelling of 2420867989 in words is "two billion, four hundred twenty million, eight hundred sixty-seven thousand, nine hundred eighty-nine".