99997969 has 8 divisors (see below), whose sum is σ = 106833440. Its totient is φ = 93319776.

The previous prime is 99997957. The next prime is 99997973. The reversal of 99997969 is 96979999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99997969 - 2⁷ = 99997841 is a prime.

It is a super-2 number, since 2×99997969² = 19999187608249922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99997949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38004 + ... + 40549.

It is an arithmetic number, because the mean of its divisors is an integer number (13354180).

Almost surely, 2^99997969 is an apocalyptic number.

It is an amenable number.

99997969 is a deficient number, since it is larger than the sum of its proper divisors (6835471).

99997969 is a wasteful number, since it uses less digits than its factorization.

99997969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78639.

The product of its digits is 22320522, while the sum is 67.

The square root of 99997969 is about 9999.8984494844. The cubic root of 99997969 is about 464.1557409844.

The spelling of 99997969 in words is "ninety-nine million, nine hundred ninety-seven thousand, nine hundred sixty-nine".