101789797 has 8 divisors (see below), whose sum is σ = 106011000. Its totient is φ = 97616064.

The previous prime is 101789777. The next prime is 101789819. The reversal of 101789797 is 797987101.

It can be written as a sum of positive squares in 4 ways, for example, as 3363556 + 98426241 = 1834^2 + 9921^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101789797 is a prime.

It is a super-2 number, since 2×101789797² = 20722325546602418, which contains 22 as substring.

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 101789797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101789717) 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, 7458 + ... + 16099.

It is an arithmetic number, because the mean of its divisors is an integer number (13251375).

Almost surely, 2^101789797 is an apocalyptic number.

It is an amenable number.

101789797 is a deficient number, since it is larger than the sum of its proper divisors (4221203).

101789797 is a wasteful number, since it uses less digits than its factorization.

101789797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23735.

The product of its (nonzero) digits is 222264, while the sum is 49.

The square root of 101789797 is about 10089.0929721160. The cubic root of 101789797 is about 466.9116921307.

The spelling of 101789797 in words is "one hundred one million, seven hundred eighty-nine thousand, seven hundred ninety-seven".