2159469 has 12 divisors (see below), whose sum is σ = 3359356. Its totient is φ = 1328832.

The previous prime is 2159453. The next prime is 2159473. The reversal of 2159469 is 9649512.

2159469 is a `hidden beast` number, since 2 + 1 + 594 + 69 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 927369 + 1232100 = 963^2 + 1110^2 .

It is not a de Polignac number, because 2159469 - 2⁴ = 2159453 is a prime.

It is a super-2 number, since 2×2159469² = 9326612723922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9112 + ... + 9345.

2^2159469 is an apocalyptic number.

It is an amenable number.

2159469 is a deficient number, since it is larger than the sum of its proper divisors (1199887).

2159469 is a wasteful number, since it uses less digits than its factorization.

2159469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18476 (or 18473 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 2159469 is about 1469.5131846976. The cubic root of 2159469 is about 129.2554878966.

It can be divided in two parts, 2159 and 469, that added together give a triangular number (2628 = T₇₂).

The spelling of 2159469 in words is "two million, one hundred fifty-nine thousand, four hundred sixty-nine".