845469 has 6 divisors (see below), whose sum is σ = 1221246. Its totient is φ = 563640.

The previous prime is 845459. The next prime is 845489. The reversal of 845469 is 964548.

It can be written as a sum of positive squares in only one way, i.e., 632025 + 213444 = 795^2 + 462^2 .

It is not a de Polignac number, because 845469 - 2⁹ = 844957 is a prime.

It is a super-2 number, since 2×845469² = 1429635659922, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46962 + ... + 46979.

It is an arithmetic number, because the mean of its divisors is an integer number (203541).

2⁸⁴⁵⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

845469 is a deficient number, since it is larger than the sum of its proper divisors (375777).

845469 is a wasteful number, since it uses less digits than its factorization.

845469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93947 (or 93944 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 845469 is about 919.4938825245. The cubic root of 845469 is about 94.5582071903.

The spelling of 845469 in words is "eight hundred forty-five thousand, four hundred sixty-nine".