861923469 has 16 divisors (see below), whose sum is σ = 1254274560. Its totient is φ = 522141360.

The previous prime is 861923453. The next prime is 861923497. The reversal of 861923469 is 964329168.

It is not a de Polignac number, because 861923469 - 2⁴ = 861923453 is a prime.

It is a super-3 number, since 3×861923469³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861928469) 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, 92544 + ... + 101430.

It is an arithmetic number, because the mean of its divisors is an integer number (78392160).

Almost surely, 2^861923469 is an apocalyptic number.

It is an amenable number.

861923469 is a deficient number, since it is larger than the sum of its proper divisors (392351091).

861923469 is a wasteful number, since it uses less digits than its factorization.

861923469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11840.

The product of its digits is 559872, while the sum is 48.

The square root of 861923469 is about 29358.5331547746. The cubic root of 861923469 is about 951.6769895645.

The spelling of 861923469 in words is "eight hundred sixty-one million, nine hundred twenty-three thousand, four hundred sixty-nine".