1009989677 has 8 divisors (see below), whose sum is σ = 1029607416. Its totient is φ = 990392832.

The previous prime is 1009989667. The next prime is 1009989683. The reversal of 1009989677 is 7769899001.

1009989677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 226773481 + 783216196 = 15059^2 + 27986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009989677 - 2⁴ = 1009989661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009989637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121973 + ... + 129989.

It is an arithmetic number, because the mean of its divisors is an integer number (128700927).

Almost surely, 2^1009989677 is an apocalyptic number.

It is an amenable number.

1009989677 is a deficient number, since it is larger than the sum of its proper divisors (19617739).

1009989677 is an equidigital number, since it uses as much as digits as its factorization.

1009989677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10447.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The square root of 1009989677 is about 31780.3347527996. The cubic root of 1009989677 is about 1003.3188652810.

The spelling of 1009989677 in words is "one billion, nine million, nine hundred eighty-nine thousand, six hundred seventy-seven".