72722099 has 2 divisors, whose sum is σ = 72722100. Its totient is φ = 72722098.

The previous prime is 72722093. The next prime is 72722129. The reversal of 72722099 is 99022727.

It is a weak prime.

It is an emirp because it is prime and its reverse (99022727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72722099 - 2¹² = 72718003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72722093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36361049 + 36361050.

It is an arithmetic number, because the mean of its divisors is an integer number (36361050).

Almost surely, 2^72722099 is an apocalyptic number.

72722099 is a deficient number, since it is larger than the sum of its proper divisors (1).

72722099 is an equidigital number, since it uses as much as digits as its factorization.

72722099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 72722099 is about 8527.7253121803. The cubic root of 72722099 is about 417.4029061749.

The spelling of 72722099 in words is "seventy-two million, seven hundred twenty-two thousand, ninety-nine".