851952279 has 4 divisors (see below), whose sum is σ = 1135936376. Its totient is φ = 567968184.

The previous prime is 851952259. The next prime is 851952287. The reversal of 851952279 is 972259158.

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

It is not a de Polignac number, because 851952279 - 2⁹ = 851951767 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 (851952209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141992044 + ... + 141992049.

It is an arithmetic number, because the mean of its divisors is an integer number (283984094).

Almost surely, 2^851952279 is an apocalyptic number.

851952279 is a deficient number, since it is larger than the sum of its proper divisors (283984097).

851952279 is a wasteful number, since it uses less digits than its factorization.

851952279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283984096.

The product of its digits is 453600, while the sum is 48.

The square root of 851952279 is about 29188.2215799456. The cubic root of 851952279 is about 947.9929108498.

The spelling of 851952279 in words is "eight hundred fifty-one million, nine hundred fifty-two thousand, two hundred seventy-nine".