988947343421 has 2 divisors, whose sum is σ = 988947343422. Its totient is φ = 988947343420.

The previous prime is 988947343411. The next prime is 988947343441. The reversal of 988947343421 is 124343749889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 649658568196 + 339288775225 = 806014^2 + 582485^2 .

It is an emirp because it is prime and its reverse (124343749889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 988947343421 - 2⁶ = 988947343357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988947343411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494473671710 + 494473671711.

It is an arithmetic number, because the mean of its divisors is an integer number (494473671711).

Almost surely, 2^988947343421 is an apocalyptic number.

It is an amenable number.

988947343421 is a deficient number, since it is larger than the sum of its proper divisors (1).

988947343421 is an equidigital number, since it uses as much as digits as its factorization.

988947343421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 62.

The spelling of 988947343421 in words is "nine hundred eighty-eight billion, nine hundred forty-seven million, three hundred forty-three thousand, four hundred twenty-one".