400608853 has 2 divisors, whose sum is σ = 400608854. Its totient is φ = 400608852.

The previous prime is 400608851. The next prime is 400608881. The reversal of 400608853 is 358806004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361646289 + 38962564 = 19017^2 + 6242^2 .

It is a cyclic number.

It is not a de Polignac number, because 400608853 - 2¹ = 400608851 is a prime.

Together with 400608851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400608851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200304426 + 200304427.

It is an arithmetic number, because the mean of its divisors is an integer number (200304427).

Almost surely, 2^400608853 is an apocalyptic number.

It is an amenable number.

400608853 is a deficient number, since it is larger than the sum of its proper divisors (1).

400608853 is an equidigital number, since it uses as much as digits as its factorization.

400608853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 400608853 is about 20015.2155371857. The cubic root of 400608853 is about 737.1799491492.

The spelling of 400608853 in words is "four hundred million, six hundred eight thousand, eight hundred fifty-three".