72299387 has 2 divisors, whose sum is σ = 72299388. Its totient is φ = 72299386.

The previous prime is 72299377. The next prime is 72299393. The reversal of 72299387 is 78399227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72299387 - 2⁶ = 72299323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72299377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36149693 + 36149694.

It is an arithmetic number, because the mean of its divisors is an integer number (36149694).

Almost surely, 2^72299387 is an apocalyptic number.

72299387 is a deficient number, since it is larger than the sum of its proper divisors (1).

72299387 is an equidigital number, since it uses as much as digits as its factorization.

72299387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 72299387 is about 8502.9046213632. The cubic root of 72299387 is about 416.5925876481.

The spelling of 72299387 in words is "seventy-two million, two hundred ninety-nine thousand, three hundred eighty-seven".