101969797 has 4 divisors (see below), whose sum is σ = 102272716. Its totient is φ = 101666880.

The previous prime is 101969783. The next prime is 101969809. The reversal of 101969797 is 797969101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797969101 = 41 ⋅19462661.

It can be written as a sum of positive squares in 2 ways, for example, as 76020961 + 25948836 = 8719^2 + 5094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101969797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101969797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101967797) 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, 150954 + ... + 151627.

It is an arithmetic number, because the mean of its divisors is an integer number (25568179).

Almost surely, 2^101969797 is an apocalyptic number.

It is an amenable number.

101969797 is a deficient number, since it is larger than the sum of its proper divisors (302919).

101969797 is an equidigital number, since it uses as much as digits as its factorization.

101969797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302918.

The product of its (nonzero) digits is 214326, while the sum is 49.

The square root of 101969797 is about 10098.0095563433. The cubic root of 101969797 is about 467.1867511768.

The spelling of 101969797 in words is "one hundred one million, nine hundred sixty-nine thousand, seven hundred ninety-seven".