72989303 has 2 divisors, whose sum is σ = 72989304. Its totient is φ = 72989302.

The previous prime is 72989251. The next prime is 72989309. The reversal of 72989303 is 30398927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72989303 - 2⁶ = 72989239 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72989309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36494651 + 36494652.

It is an arithmetic number, because the mean of its divisors is an integer number (36494652).

Almost surely, 2^72989303 is an apocalyptic number.

72989303 is a deficient number, since it is larger than the sum of its proper divisors (1).

72989303 is an equidigital number, since it uses as much as digits as its factorization.

72989303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 72989303 is about 8543.3777278077. The cubic root of 72989303 is about 417.9135047636.

The spelling of 72989303 in words is "seventy-two million, nine hundred eighty-nine thousand, three hundred three".