869049819 has 24 divisors (see below), whose sum is σ = 1371193200. Its totient is φ = 526011840.

The previous prime is 869049799. The next prime is 869049913. The reversal of 869049819 is 918940968.

It is not a de Polignac number, because 869049819 - 2¹⁶ = 868984283 is a prime.

It is a super-3 number, since 3×869049819³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (869049019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76777 + ... + 87365.

It is an arithmetic number, because the mean of its divisors is an integer number (57133050).

Almost surely, 2^869049819 is an apocalyptic number.

869049819 is a deficient number, since it is larger than the sum of its proper divisors (502143381).

869049819 is a wasteful number, since it uses less digits than its factorization.

869049819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11435 (or 11432 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 869049819 is about 29479.6509307692. The cubic root of 869049819 is about 954.2926037045.

The spelling of 869049819 in words is "eight hundred sixty-nine million, forty-nine thousand, eight hundred nineteen".