909167971009 has 3 divisors (see below), whose sum is σ = 909168924513. Its totient is φ = 909167017506.

The previous prime is 909167971007. The next prime is 909167971031. The reversal of 909167971009 is 900179761909.

The square root of 909167971009 is 953503.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 900179761909 = 41 ⋅21955603949.

It is not a de Polignac number, because 909167971009 - 2¹ = 909167971007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (909167971007) 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 in 2 ways as a sum of consecutive naturals, for example, 476752 + ... + 1430254.

It is an arithmetic number, because the mean of its divisors is an integer number (303056308171).

Almost surely, 2^909167971009 is an apocalyptic number.

909167971009 is the 953503-rd square number.

909167971009 is the 476752-nd centered octagonal number.

It is an amenable number.

909167971009 is a deficient number, since it is larger than the sum of its proper divisors (953504).

909167971009 is an frugal number, since it uses more digits than its factorization.

909167971009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907006 (or 953503 counting only the distinct ones).

The product of its (nonzero) digits is 1928934, while the sum is 58.

The spelling of 909167971009 in words is "nine hundred nine billion, one hundred sixty-seven million, nine hundred seventy-one thousand, nine".