1449021409 has 4 divisors (see below), whose sum is σ = 1580750640. Its totient is φ = 1317292180.

The previous prime is 1449021403. The next prime is 1449021443. The reversal of 1449021409 is 9041209441.

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 1449021409 - 2⁷ = 1449021281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1449021403) 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, 65864599 + ... + 65864620.

It is an arithmetic number, because the mean of its divisors is an integer number (395187660).

Almost surely, 2^1449021409 is an apocalyptic number.

It is an amenable number.

1449021409 is a deficient number, since it is larger than the sum of its proper divisors (131729231).

1449021409 is a wasteful number, since it uses less digits than its factorization.

1449021409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131729230.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1449021409 is about 38066.0138312380. The cubic root of 1449021409 is about 1131.5965135121.

The spelling of 1449021409 in words is "one billion, four hundred forty-nine million, twenty-one thousand, four hundred nine".