72440353 has 2 divisors, whose sum is σ = 72440354. Its totient is φ = 72440352.

The previous prime is 72440341. The next prime is 72440387. The reversal of 72440353 is 35304427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72386064 + 54289 = 8508^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 72440353 - 2⁵ = 72440321 is a prime.

It is not a weakly prime, because it can be changed into another prime (72440653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36220176 + 36220177.

It is an arithmetic number, because the mean of its divisors is an integer number (36220177).

Almost surely, 2^72440353 is an apocalyptic number.

It is an amenable number.

72440353 is a deficient number, since it is larger than the sum of its proper divisors (1).

72440353 is an equidigital number, since it uses as much as digits as its factorization.

72440353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 72440353 is about 8511.1898698126. The cubic root of 72440353 is about 416.8631628574.

The spelling of 72440353 in words is "seventy-two million, four hundred forty thousand, three hundred fifty-three".