809036144 has 20 divisors (see below), whose sum is σ = 1791437424. Its totient is φ = 346729728.

The previous prime is 809036141. The next prime is 809036147. The reversal of 809036144 is 441630908.

It is an interprime number because it is at equal distance from previous prime (809036141) and next prime (809036147).

It is a super-3 number, since 3×809036144³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809036141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3611657 + ... + 3611880.

Almost surely, 2^809036144 is an apocalyptic number.

It is an amenable number.

809036144 is an abundant number, since it is smaller than the sum of its proper divisors (982401280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809036144 is a wasteful number, since it uses less digits than its factorization.

809036144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7223552 (or 7223546 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 809036144 is about 28443.5606772429. The cubic root of 809036144 is about 931.7998612414.

The spelling of 809036144 in words is "eight hundred nine million, thirty-six thousand, one hundred forty-four".