1044215549 has 4 divisors (see below), whose sum is σ = 1124539836. Its totient is φ = 963891264.

The previous prime is 1044215537. The next prime is 1044215567. The reversal of 1044215549 is 9455124401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9455124401 = 79 ⋅119685119.

It can be written as a sum of positive squares in 2 ways, for example, as 189062500 + 855153049 = 13750^2 + 29243^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044215549 - 2⁴ = 1044215533 is a prime.

It is a super-2 number, since 2×1044215549² = 2180772225546742802, 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 (1044215449) 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, 40162124 + ... + 40162149.

It is an arithmetic number, because the mean of its divisors is an integer number (281134959).

Almost surely, 2^1044215549 is an apocalyptic number.

It is an amenable number.

1044215549 is a deficient number, since it is larger than the sum of its proper divisors (80324287).

1044215549 is an equidigital number, since it uses as much as digits as its factorization.

1044215549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80324286.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 1044215549 is about 32314.3242076946. The cubic root of 1044215549 is about 1014.5264760420.

The spelling of 1044215549 in words is "one billion, forty-four million, two hundred fifteen thousand, five hundred forty-nine".