2149469 has 4 divisors (see below), whose sum is σ = 2456544. Its totient is φ = 1842396.

The previous prime is 2149453. The next prime is 2149471. The reversal of 2149469 is 9649412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2149469 - 2⁴ = 2149453 is a prime.

It is a super-2 number, since 2×2149469² = 9240433963922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153527 + ... + 153540.

It is an arithmetic number, because the mean of its divisors is an integer number (614136).

2^2149469 is an apocalyptic number.

It is an amenable number.

2149469 is a deficient number, since it is larger than the sum of its proper divisors (307075).

2149469 is an equidigital number, since it uses as much as digits as its factorization.

2149469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307074.

The product of its digits is 15552, while the sum is 35.

The square root of 2149469 is about 1466.1067491830. The cubic root of 2149469 is about 129.0556617353.

The spelling of 2149469 in words is "two million, one hundred forty-nine thousand, four hundred sixty-nine".