72834869 has 2 divisors, whose sum is σ = 72834870. Its totient is φ = 72834868.

The previous prime is 72834857. The next prime is 72834877. The reversal of 72834869 is 96843827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57912100 + 14922769 = 7610^2 + 3863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72834869 is a prime.

It is a super-2 number, since 2×72834869² = 10609836284494322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72834889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36417434 + 36417435.

It is an arithmetic number, because the mean of its divisors is an integer number (36417435).

Almost surely, 2^72834869 is an apocalyptic number.

It is an amenable number.

72834869 is a deficient number, since it is larger than the sum of its proper divisors (1).

72834869 is an equidigital number, since it uses as much as digits as its factorization.

72834869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 72834869 is about 8534.3347133798. The cubic root of 72834869 is about 417.6185500053.

The spelling of 72834869 in words is "seventy-two million, eight hundred thirty-four thousand, eight hundred sixty-nine".