984669487 has 2 divisors, whose sum is σ = 984669488. Its totient is φ = 984669486.

The previous prime is 984669401. The next prime is 984669559. The reversal of 984669487 is 784966489.

It is a strong prime.

It is an emirp because it is prime and its reverse (784966489) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984669487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984619487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492334743 + 492334744.

It is an arithmetic number, because the mean of its divisors is an integer number (492334744).

Almost surely, 2^984669487 is an apocalyptic number.

984669487 is a deficient number, since it is larger than the sum of its proper divisors (1).

984669487 is an equidigital number, since it uses as much as digits as its factorization.

984669487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 61.

The square root of 984669487 is about 31379.4437012513. The cubic root of 984669487 is about 994.8634904430.

The spelling of 984669487 in words is "nine hundred eighty-four million, six hundred sixty-nine thousand, four hundred eighty-seven".