97807839 has 8 divisors (see below), whose sum is σ = 137274240. Its totient is φ = 61773336.

The previous prime is 97807823. The next prime is 97807861. The reversal of 97807839 is 93870879.

It is a happy number.

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

It is not a de Polignac number, because 97807839 - 2⁴ = 97807823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97807791 and 97807800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97807819) 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, 857907 + ... + 858020.

It is an arithmetic number, because the mean of its divisors is an integer number (17159280).

Almost surely, 2^97807839 is an apocalyptic number.

97807839 is a deficient number, since it is larger than the sum of its proper divisors (39466401).

97807839 is a wasteful number, since it uses less digits than its factorization.

97807839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715949.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 97807839 is about 9889.7845780381. The cubic root of 97807839 is about 460.7420898378.

The spelling of 97807839 in words is "ninety-seven million, eight hundred seven thousand, eight hundred thirty-nine".