869778246 has 16 divisors (see below), whose sum is σ = 1748389104. Its totient is φ = 288453984.

The previous prime is 869778241. The next prime is 869778307. The reversal of 869778246 is 642877968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869778241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366745 + ... + 369108.

It is an arithmetic number, because the mean of its divisors is an integer number (109274319).

Almost surely, 2^869778246 is an apocalyptic number.

869778246 is an abundant number, since it is smaller than the sum of its proper divisors (878610858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869778246 is a wasteful number, since it uses less digits than its factorization.

869778246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736055.

The product of its digits is 8128512, while the sum is 57.

The square root of 869778246 is about 29492.0030855824. The cubic root of 869778246 is about 954.5591547339.

The spelling of 869778246 in words is "eight hundred sixty-nine million, seven hundred seventy-eight thousand, two hundred forty-six".