72900847 has 2 divisors, whose sum is σ = 72900848. Its totient is φ = 72900846.

The previous prime is 72900799. The next prime is 72900881. The reversal of 72900847 is 74800927.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74800927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72900847 - 2⁷ = 72900719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72901847) 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, 36450423 + 36450424.

It is an arithmetic number, because the mean of its divisors is an integer number (36450424).

Almost surely, 2^72900847 is an apocalyptic number.

72900847 is a deficient number, since it is larger than the sum of its proper divisors (1).

72900847 is an equidigital number, since it uses as much as digits as its factorization.

72900847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 72900847 is about 8538.1992832213. The cubic root of 72900847 is about 417.7446128896.

The spelling of 72900847 in words is "seventy-two million, nine hundred thousand, eight hundred forty-seven".