121894444 has 12 divisors (see below), whose sum is σ = 243788944. Its totient is φ = 52240464.

The previous prime is 121894439. The next prime is 121894459. The reversal of 121894444 is 444498121.

121894444 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2176659 + ... + 2176714.

Almost surely, 2^121894444 is an apocalyptic number.

121894444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121894444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121894444 is a wasteful number, since it uses less digits than its factorization.

121894444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353384 (or 4353382 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 121894444 is about 11040.5816875743. The cubic root of 121894444 is about 495.8244858969.

The spelling of 121894444 in words is "one hundred twenty-one million, eight hundred ninety-four thousand, four hundred forty-four".