2145449 has 8 divisors (see below), whose sum is σ = 2237760. Its totient is φ = 2054416.

The previous prime is 2145443. The next prime is 2145469. The reversal of 2145449 is 9445412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2145449 - 2⁴ = 2145433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2145443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4622 + ... + 5064.

It is an arithmetic number, because the mean of its divisors is an integer number (279720).

2^2145449 is an apocalyptic number.

2145449 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2145449 is a deficient number, since it is larger than the sum of its proper divisors (92311).

2145449 is a wasteful number, since it uses less digits than its factorization.

2145449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its digits is 5760, while the sum is 29.

The square root of 2145449 is about 1464.7351296395. The cubic root of 2145449 is about 128.9751569651.

The spelling of 2145449 in words is "two million, one hundred forty-five thousand, four hundred forty-nine".