99212783 has 2 divisors, whose sum is σ = 99212784. Its totient is φ = 99212782.

The previous prime is 99212717. The next prime is 99212791. The reversal of 99212783 is 38721299.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (38721299) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99212783 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99212783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99212083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49606391 + 49606392.

It is an arithmetic number, because the mean of its divisors is an integer number (49606392).

Almost surely, 2^99212783 is an apocalyptic number.

99212783 is a deficient number, since it is larger than the sum of its proper divisors (1).

99212783 is an equidigital number, since it uses as much as digits as its factorization.

99212783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 99212783 is about 9960.5613797617. The cubic root of 99212783 is about 462.9376940511.

The spelling of 99212783 in words is "ninety-nine million, two hundred twelve thousand, seven hundred eighty-three".