855435949 has 4 divisors (see below), whose sum is σ = 855750780. Its totient is φ = 855121120.

The previous prime is 855435947. The next prime is 855436019. The reversal of 855435949 is 949534558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 175165225 + 680270724 = 13235^2 + 26082^2 .

It is a cyclic number.

It is not a de Polignac number, because 855435949 - 2¹ = 855435947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855435896 and 855435905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855435947) 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 3 ways as a sum of consecutive naturals, for example, 153304 + ... + 158785.

It is an arithmetic number, because the mean of its divisors is an integer number (213937695).

Almost surely, 2^855435949 is an apocalyptic number.

It is an amenable number.

855435949 is a deficient number, since it is larger than the sum of its proper divisors (314831).

855435949 is a wasteful number, since it uses less digits than its factorization.

855435949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314830.

The product of its digits is 3888000, while the sum is 52.

The square root of 855435949 is about 29247.8366550417. The cubic root of 855435949 is about 949.2832817602.

The spelling of 855435949 in words is "eight hundred fifty-five million, four hundred thirty-five thousand, nine hundred forty-nine".