988888807 has 2 divisors, whose sum is σ = 988888808. Its totient is φ = 988888806.

The previous prime is 988888723. The next prime is 988888829. The reversal of 988888807 is 708888889.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988888807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988888837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494444403 + 494444404.

It is an arithmetic number, because the mean of its divisors is an integer number (494444404).

Almost surely, 2^988888807 is an apocalyptic number.

988888807 is a deficient number, since it is larger than the sum of its proper divisors (1).

988888807 is an equidigital number, since it uses as much as digits as its factorization.

988888807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16515072, while the sum is 64.

The square root of 988888807 is about 31446.6024714913. The cubic root of 988888807 is about 996.2824660670.

The spelling of 988888807 in words is "nine hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred seven".