869799438 has 32 divisors (see below), whose sum is σ = 1938468000. Its totient is φ = 289096128.

The previous prime is 869799421. The next prime is 869799439. The reversal of 869799438 is 834997968.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869799439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4231 + ... + 41922.

It is an arithmetic number, because the mean of its divisors is an integer number (60577125).

Almost surely, 2^869799438 is an apocalyptic number.

869799438 is an abundant number, since it is smaller than the sum of its proper divisors (1068668562).

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

869799438 is a wasteful number, since it uses less digits than its factorization.

869799438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46513 (or 46507 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The square root of 869799438 is about 29492.3623672299. The cubic root of 869799438 is about 954.5669072284.

The spelling of 869799438 in words is "eight hundred sixty-nine million, seven hundred ninety-nine thousand, four hundred thirty-eight".