99949771 has 2 divisors, whose sum is σ = 99949772. Its totient is φ = 99949770.

The previous prime is 99949711. The next prime is 99949813. The reversal of 99949771 is 17794999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99949771 - 2⁹ = 99949259 is a prime.

It is not a weakly prime, because it can be changed into another prime (99949711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49974885 + 49974886.

It is an arithmetic number, because the mean of its divisors is an integer number (49974886).

Almost surely, 2^99949771 is an apocalyptic number.

99949771 is a deficient number, since it is larger than the sum of its proper divisors (1).

99949771 is an equidigital number, since it uses as much as digits as its factorization.

99949771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1285956, while the sum is 55.

The square root of 99949771 is about 9997.4882345517. The cubic root of 99949771 is about 464.0811562241.

The spelling of 99949771 in words is "ninety-nine million, nine hundred forty-nine thousand, seven hundred seventy-one".