878351769 has 45 divisors (see below), whose sum is σ = 1363848717. Its totient is φ = 563340096.

The previous prime is 878351759. The next prime is 878351777. The reversal of 878351769 is 967153878.

The square root of 878351769 is 29637.

It is a perfect power (a square), and thus also a powerful number.

878351769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13286025 + 865065744 = 3645^2 + 29412^2 .

It is not a de Polignac number, because 878351769 - 2⁷ = 878351641 is a prime.

It is a super-2 number, since 2×878351769² = 1543003660210858722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (878351759) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 9869077 + ... + 9869165.

Almost surely, 2^878351769 is an apocalyptic number.

878351769 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

878351769 is the 29637-th square number and also the 15842-nd nonagonal number.

878351769 is the 14819-th centered octagonal number.

It is an amenable number.

878351769 is a deficient number, since it is larger than the sum of its proper divisors (485496948).

878351769 is an frugal number, since it uses more digits than its factorization.

878351769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 129 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The cubic root of 878351769 is about 957.6853121367.

The spelling of 878351769 in words is "eight hundred seventy-eight million, three hundred fifty-one thousand, seven hundred sixty-nine".