909971051 has 4 divisors (see below), whose sum is σ = 992695704. Its totient is φ = 827246400.

The previous prime is 909971021. The next prime is 909971063. The reversal of 909971051 is 150179909.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 909971051 - 2⁶ = 909970987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (909971021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41362310 + ... + 41362331.

It is an arithmetic number, because the mean of its divisors is an integer number (248173926).

Almost surely, 2^909971051 is an apocalyptic number.

909971051 is a deficient number, since it is larger than the sum of its proper divisors (82724653).

909971051 is a wasteful number, since it uses less digits than its factorization.

909971051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82724652.

The product of its (nonzero) digits is 25515, while the sum is 41.

The square root of 909971051 is about 30165.7264291779. The cubic root of 909971051 is about 969.0418323774.

The spelling of 909971051 in words is "nine hundred nine million, nine hundred seventy-one thousand, fifty-one".