99071213 has 2 divisors, whose sum is σ = 99071214. Its totient is φ = 99071212.

The previous prime is 99071177. The next prime is 99071267. The reversal of 99071213 is 31217099.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98465929 + 605284 = 9923^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 99071213 - 2¹⁶ = 99005677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99071213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99077213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49535606 + 49535607.

It is an arithmetic number, because the mean of its divisors is an integer number (49535607).

Almost surely, 2^99071213 is an apocalyptic number.

It is an amenable number.

99071213 is a deficient number, since it is larger than the sum of its proper divisors (1).

99071213 is an equidigital number, since it uses as much as digits as its factorization.

99071213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 99071213 is about 9953.4523156541. The cubic root of 99071213 is about 462.7173955340.

The spelling of 99071213 in words is "ninety-nine million, seventy-one thousand, two hundred thirteen".