854992621 has 12 divisors (see below), whose sum is σ = 1003714140. Its totient is φ = 726122880.

The previous prime is 854992603. The next prime is 854992627. The reversal of 854992621 is 126299458.

It can be written as a sum of positive squares in 2 ways, for example, as 773451721 + 81540900 = 27811^2 + 9030^2 .

It is not a de Polignac number, because 854992621 - 2⁹ = 854992109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854992627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74700 + ... + 85381.

It is an arithmetic number, because the mean of its divisors is an integer number (83642845).

Almost surely, 2^854992621 is an apocalyptic number.

It is an amenable number.

854992621 is a deficient number, since it is larger than the sum of its proper divisors (148721519).

854992621 is a wasteful number, since it uses less digits than its factorization.

854992621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160204 (or 160197 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 854992621 is about 29240.2568559170. The cubic root of 854992621 is about 949.1192653580.

The spelling of 854992621 in words is "eight hundred fifty-four million, nine hundred ninety-two thousand, six hundred twenty-one".