99144769 has 2 divisors, whose sum is σ = 99144770. Its totient is φ = 99144768.

The previous prime is 99144757. The next prime is 99144797. The reversal of 99144769 is 96744199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68674369 + 30470400 = 8287^2 + 5520^2 .

It is a cyclic number.

It is not a de Polignac number, because 99144769 - 2⁹ = 99144257 is a prime.

It is a super-2 number, since 2×99144769² = 19659370440126722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99124769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49572384 + 49572385.

It is an arithmetic number, because the mean of its divisors is an integer number (49572385).

Almost surely, 2^99144769 is an apocalyptic number.

It is an amenable number.

99144769 is a deficient number, since it is larger than the sum of its proper divisors (1).

99144769 is an equidigital number, since it uses as much as digits as its factorization.

99144769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 49.

The square root of 99144769 is about 9957.1466294315. The cubic root of 99144769 is about 462.8318829479.

The spelling of 99144769 in words is "ninety-nine million, one hundred forty-four thousand, seven hundred sixty-nine".