851434 has 8 divisors (see below), whose sum is σ = 1284228. Its totient is φ = 423360.

The previous prime is 851423. The next prime is 851449. The reversal of 851434 is 434158.

It can be written as a sum of positive squares in 2 ways, for example, as 731025 + 120409 = 855^2 + 347^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 851399 and 851408.

It is a congruent 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, 687 + ... + 1474.

2⁸⁵¹⁴³⁴ is an apocalyptic number.

851434 is a deficient number, since it is larger than the sum of its proper divisors (432794).

851434 is a wasteful number, since it uses less digits than its factorization.

851434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360.

The product of its digits is 1920, while the sum is 25.

The square root of 851434 is about 922.7318136924. The cubic root of 851434 is about 94.7800636981.

The spelling of 851434 in words is "eight hundred fifty-one thousand, four hundred thirty-four".