854404981 has 8 divisors (see below), whose sum is σ = 885406464. Its totient is φ = 823618560.

The previous prime is 854404949. The next prime is 854405011. The reversal of 854404981 is 189404458.

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

It is a cyclic number.

It is not a de Polignac number, because 854404981 - 2⁵ = 854404949 is a prime.

It is a super-2 number, since 2×854404981² = 1460015743115220722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854404081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45655 + ... + 61588.

It is an arithmetic number, because the mean of its divisors is an integer number (110675808).

Almost surely, 2^854404981 is an apocalyptic number.

It is an amenable number.

854404981 is a deficient number, since it is larger than the sum of its proper divisors (31001483).

854404981 is a wasteful number, since it uses less digits than its factorization.

854404981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107531.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 854404981 is about 29230.2066533920. The cubic root of 854404981 is about 948.9017709768.

The spelling of 854404981 in words is "eight hundred fifty-four million, four hundred four thousand, nine hundred eighty-one".