872452779 has 16 divisors (see below), whose sum is σ = 1272872064. Its totient is φ = 527155200.

The previous prime is 872452771. The next prime is 872452807. The reversal of 872452779 is 977254278.

It is not a de Polignac number, because 872452779 - 2³ = 872452771 is a prime.

It is a super-2 number, since 2×872452779² = 1522347703169645682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872452771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29014 + ... + 50859.

It is an arithmetic number, because the mean of its divisors is an integer number (79554504).

Almost surely, 2^872452779 is an apocalyptic number.

872452779 is a deficient number, since it is larger than the sum of its proper divisors (400419285).

872452779 is a wasteful number, since it uses less digits than its factorization.

872452779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80218.

The product of its digits is 1975680, while the sum is 51.

The square root of 872452779 is about 29537.3116413800. The cubic root of 872452779 is about 955.5365638770.

The spelling of 872452779 in words is "eight hundred seventy-two million, four hundred fifty-two thousand, seven hundred seventy-nine".