844138454 has 8 divisors (see below), whose sum is σ = 1284041808. Its totient is φ = 416124520.

The previous prime is 844138411. The next prime is 844138487. The reversal of 844138454 is 454831448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 2972177 + ... + 2972460.

It is an arithmetic number, because the mean of its divisors is an integer number (160505226).

Almost surely, 2^844138454 is an apocalyptic number.

844138454 is a deficient number, since it is larger than the sum of its proper divisors (439903354).

844138454 is a wasteful number, since it uses less digits than its factorization.

844138454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944710.

The product of its digits is 245760, while the sum is 41.

The square root of 844138454 is about 29054.0608865611. The cubic root of 844138454 is about 945.0857789123.

The spelling of 844138454 in words is "eight hundred forty-four million, one hundred thirty-eight thousand, four hundred fifty-four".