72111469 has 2 divisors, whose sum is σ = 72111470. Its totient is φ = 72111468.

The previous prime is 72111461. The next prime is 72111491. The reversal of 72111469 is 96411127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 10692900 = 7837^2 + 3270^2 .

It is a cyclic number.

It is not a de Polignac number, because 72111469 - 2³ = 72111461 is a prime.

It is a super-2 number, since 2×72111469² = 10400127922675922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72111469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72111461) 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 as a sum of consecutive naturals, namely, 36055734 + 36055735.

It is an arithmetic number, because the mean of its divisors is an integer number (36055735).

Almost surely, 2^72111469 is an apocalyptic number.

It is an amenable number.

72111469 is a deficient number, since it is larger than the sum of its proper divisors (1).

72111469 is an equidigital number, since it uses as much as digits as its factorization.

72111469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 72111469 is about 8491.8472077635. The cubic root of 72111469 is about 416.2313436014.

The spelling of 72111469 in words is "seventy-two million, one hundred eleven thousand, four hundred sixty-nine".