844138054 has 16 divisors (see below), whose sum is σ = 1316106288. Its totient is φ = 405711072.

The previous prime is 844138051. The next prime is 844138081. The reversal of 844138054 is 450831448.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844138051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62577 + ... + 74860.

It is an arithmetic number, because the mean of its divisors is an integer number (82256643).

Almost surely, 2^844138054 is an apocalyptic number.

844138054 is a deficient number, since it is larger than the sum of its proper divisors (471968234).

844138054 is a wasteful number, since it uses less digits than its factorization.

844138054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137559.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 844138054 is about 29054.0540028410. The cubic root of 844138054 is about 945.0856296341.

The spelling of 844138054 in words is "eight hundred forty-four million, one hundred thirty-eight thousand, fifty-four".