97797999 has 8 divisors (see below), whose sum is σ = 140427952. Its totient is φ = 60183360.

The previous prime is 97797977. The next prime is 97798003. The reversal of 97797999 is 99979779.

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

It is not a de Polignac number, because 97797999 - 2⁹ = 97797487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97797299) 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, 1253782 + ... + 1253859.

It is an arithmetic number, because the mean of its divisors is an integer number (17553494).

Almost surely, 2^97797999 is an apocalyptic number.

97797999 is a deficient number, since it is larger than the sum of its proper divisors (42629953).

97797999 is a wasteful number, since it uses less digits than its factorization.

97797999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507657.

The product of its digits is 20253807, while the sum is 66.

The square root of 97797999 is about 9889.2870824949. The cubic root of 97797999 is about 460.7266382671.

The spelling of 97797999 in words is "ninety-seven million, seven hundred ninety-seven thousand, nine hundred ninety-nine".