988805849 has 2 divisors, whose sum is σ = 988805850. Its totient is φ = 988805848.

The previous prime is 988805827. The next prime is 988805887. The reversal of 988805849 is 948508889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 538008025 + 450797824 = 23195^2 + 21232^2 .

It is a cyclic number.

It is not a de Polignac number, because 988805849 - 2⁸ = 988805593 is a prime.

It is a super-2 number, since 2×988805849² = 1955474014033221602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (988805149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494402924 + 494402925.

It is an arithmetic number, because the mean of its divisors is an integer number (494402925).

Almost surely, 2^988805849 is an apocalyptic number.

It is an amenable number.

988805849 is a deficient number, since it is larger than the sum of its proper divisors (1).

988805849 is an equidigital number, since it uses as much as digits as its factorization.

988805849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6635520, while the sum is 59.

The square root of 988805849 is about 31445.2834142102. The cubic root of 988805849 is about 996.2546058696.

The spelling of 988805849 in words is "nine hundred eighty-eight million, eight hundred five thousand, eight hundred forty-nine".