988770493 has 2 divisors, whose sum is σ = 988770494. Its totient is φ = 988770492.

The previous prime is 988770487. The next prime is 988770521. The reversal of 988770493 is 394077889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937461924 + 51308569 = 30618^2 + 7163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988770493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988770193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494385246 + 494385247.

It is an arithmetic number, because the mean of its divisors is an integer number (494385247).

Almost surely, 2^988770493 is an apocalyptic number.

It is an amenable number.

988770493 is a deficient number, since it is larger than the sum of its proper divisors (1).

988770493 is an equidigital number, since it uses as much as digits as its factorization.

988770493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 988770493 is about 31444.7212263044. The cubic root of 988770493 is about 996.2427316148.

The spelling of 988770493 in words is "nine hundred eighty-eight million, seven hundred seventy thousand, four hundred ninety-three".