97790113 has 4 divisors (see below), whose sum is σ = 98687380. Its totient is φ = 96892848.

The previous prime is 97790107. The next prime is 97790129. The reversal of 97790113 is 31109779.

97790113 = 6992² + 6993².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48902049 + 48888064 = 6993^2 + 6992^2 .

It is a cyclic number.

It is not a de Polignac number, because 97790113 - 2²⁵ = 64235681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97790713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448470 + ... + 448687.

It is an arithmetic number, because the mean of its divisors is an integer number (24671845).

Almost surely, 2^97790113 is an apocalyptic number.

97790113 is the 6993-rd centered square number.

It is an amenable number.

97790113 is a deficient number, since it is larger than the sum of its proper divisors (897267).

97790113 is a wasteful number, since it uses less digits than its factorization.

97790113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897266.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 97790113 is about 9888.8883601748. Note that the first 3 decimals coincide. The cubic root of 97790113 is about 460.7142542784.

It can be divided in two parts, 97790 and 113, that added together give a triangular number (97903 = T₄₄₂).

The spelling of 97790113 in words is "ninety-seven million, seven hundred ninety thousand, one hundred thirteen".