36444409 has 4 divisors (see below), whose sum is σ = 36629604. Its totient is φ = 36259216.

The previous prime is 36444407. The next prime is 36444427. The reversal of 36444409 is 90444463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90444463 = 59 ⋅1532957.

It can be written as a sum of positive squares in 2 ways, for example, as 19404025 + 17040384 = 4405^2 + 4128^2 .

It is a cyclic number.

It is not a de Polignac number, because 36444409 - 2¹ = 36444407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36444407) 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, 92302 + ... + 92695.

It is an arithmetic number, because the mean of its divisors is an integer number (9157401).

Almost surely, 2^36444409 is an apocalyptic number.

It is an amenable number.

36444409 is a deficient number, since it is larger than the sum of its proper divisors (185195).

36444409 is a wasteful number, since it uses less digits than its factorization.

36444409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185194.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 36444409 is about 6036.9204897862. The cubic root of 36444409 is about 331.5458814016.

The spelling of 36444409 in words is "thirty-six million, four hundred forty-four thousand, four hundred nine".