72044469 has 12 divisors (see below), whose sum is σ = 118930656. Its totient is φ = 41168232.

The previous prime is 72044461. The next prime is 72044471. The reversal of 72044469 is 96444027.

72044469 is a `hidden beast` number, since 7 + 204 + 446 + 9 = 666.

It is not a de Polignac number, because 72044469 - 2³ = 72044461 is a prime.

It is a super-2 number, since 2×72044469² = 10380811026983922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72044461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571719 + ... + 571844.

It is an arithmetic number, because the mean of its divisors is an integer number (9910888).

Almost surely, 2^72044469 is an apocalyptic number.

It is an amenable number.

72044469 is a deficient number, since it is larger than the sum of its proper divisors (46886187).

72044469 is a wasteful number, since it uses less digits than its factorization.

72044469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143576 (or 1143573 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 72044469 is about 8487.9013307177. The cubic root of 72044469 is about 416.1023944352.

The spelling of 72044469 in words is "seventy-two million, forty-four thousand, four hundred sixty-nine".