909961894 has 16 divisors (see below), whose sum is σ = 1383117120. Its totient is φ = 448962280.

The previous prime is 909961891. The next prime is 909961901. The reversal of 909961894 is 498169909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909961891) 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 7 ways as a sum of consecutive naturals, for example, 37197 + ... + 56599.

It is an arithmetic number, because the mean of its divisors is an integer number (86444820).

Almost surely, 2^909961894 is an apocalyptic number.

909961894 is a deficient number, since it is larger than the sum of its proper divisors (473155226).

909961894 is a wasteful number, since it uses less digits than its factorization.

909961894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19715.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 909961894 is about 30165.5746505847. The cubic root of 909961894 is about 969.0385818909.

The spelling of 909961894 in words is "nine hundred nine million, nine hundred sixty-one thousand, eight hundred ninety-four".