917970097 has 16 divisors (see below), whose sum is σ = 1068705792. Its totient is φ = 779224320.

The previous prime is 917970071. The next prime is 917970103. The reversal of 917970097 is 790079719.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 917970097 - 2¹¹ = 917968049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 917970097.

It is not an unprimeable number, because it can be changed into a prime (917970397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4423 + ... + 43075.

It is an arithmetic number, because the mean of its divisors is an integer number (66794112).

Almost surely, 2^917970097 is an apocalyptic number.

It is an amenable number.

917970097 is a deficient number, since it is larger than the sum of its proper divisors (150735695).

917970097 is a wasteful number, since it uses less digits than its factorization.

917970097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38808.

The product of its (nonzero) digits is 250047, while the sum is 49.

The square root of 917970097 is about 30298.0213380346. The cubic root of 917970097 is about 971.8729875332.

The spelling of 917970097 in words is "nine hundred seventeen million, nine hundred seventy thousand, ninety-seven".