989048377 has 2 divisors, whose sum is σ = 989048378. Its totient is φ = 989048376.

The previous prime is 989048341. The next prime is 989048471. The reversal of 989048377 is 773840989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988222096 + 826281 = 31436^2 + 909^2 .

It is a cyclic number.

It is not a de Polignac number, because 989048377 - 2¹¹ = 989046329 is a prime.

It is not a weakly prime, because it can be changed into another prime (989048677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494524188 + 494524189.

It is an arithmetic number, because the mean of its divisors is an integer number (494524189).

Almost surely, 2^989048377 is an apocalyptic number.

It is an amenable number.

989048377 is a deficient number, since it is larger than the sum of its proper divisors (1).

989048377 is an equidigital number, since it uses as much as digits as its factorization.

989048377 is an odious number, because the sum of its binary digits is odd.

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

The square root of 989048377 is about 31449.1395271794. The cubic root of 989048377 is about 996.3360508724.

The spelling of 989048377 in words is "nine hundred eighty-nine million, forty-eight thousand, three hundred seventy-seven".