99769385 has 4 divisors (see below), whose sum is σ = 119723268. Its totient is φ = 79815504.

The previous prime is 99769349. The next prime is 99769393. The reversal of 99769385 is 58396799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58396799 = 877 ⋅66587.

It can be written as a sum of positive squares in 2 ways, for example, as 55785961 + 43983424 = 7469^2 + 6632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99769385 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99769385.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9976934 + ... + 9976943.

It is an arithmetic number, because the mean of its divisors is an integer number (29930817).

Almost surely, 2^99769385 is an apocalyptic number.

It is an amenable number.

99769385 is a deficient number, since it is larger than the sum of its proper divisors (19953883).

99769385 is a wasteful number, since it uses less digits than its factorization.

99769385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19953882.

The product of its digits is 3674160, while the sum is 56.

The square root of 99769385 is about 9988.4625944136. The cubic root of 99769385 is about 463.8018020565.

The spelling of 99769385 in words is "ninety-nine million, seven hundred sixty-nine thousand, three hundred eighty-five".