99669797 has 4 divisors (see below), whose sum is σ = 100931520. Its totient is φ = 98408076.

The previous prime is 99669769. The next prime is 99669809. The reversal of 99669797 is 79796699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79796699 = 6053 ⋅13183.

It is a cyclic number.

It is not a de Polignac number, because 99669797 - 2⁸ = 99669541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99669707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630743 + ... + 630900.

It is an arithmetic number, because the mean of its divisors is an integer number (25232880).

Almost surely, 2^99669797 is an apocalyptic number.

It is an amenable number.

99669797 is a deficient number, since it is larger than the sum of its proper divisors (1261723).

99669797 is a wasteful number, since it uses less digits than its factorization.

99669797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261722.

The product of its digits is 11573604, while the sum is 62.

The square root of 99669797 is about 9983.4761981987. The cubic root of 99669797 is about 463.6474311515.

The spelling of 99669797 in words is "ninety-nine million, six hundred sixty-nine thousand, seven hundred ninety-seven".