849429505 has 4 divisors (see below), whose sum is σ = 1019315412. Its totient is φ = 679543600.

The previous prime is 849429499. The next prime is 849429547. The reversal of 849429505 is 505924948.

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 441672256 + 407757249 = 21016^2 + 20193^2 .

It is not a de Polignac number, because 849429505 - 2⁵ = 849429473 is a prime.

It is a Duffinian 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, 84942946 + ... + 84942955.

It is an arithmetic number, because the mean of its divisors is an integer number (254828853).

Almost surely, 2^849429505 is an apocalyptic number.

It is an amenable number.

849429505 is a deficient number, since it is larger than the sum of its proper divisors (169885907).

849429505 is a wasteful number, since it uses less digits than its factorization.

849429505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169885906.

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 849429505 is about 29144.9739234744. The cubic root of 849429505 is about 947.0562635620.

The spelling of 849429505 in words is "eight hundred forty-nine million, four hundred twenty-nine thousand, five hundred five".