108401997 has 8 divisors (see below), whose sum is σ = 157675680. Its totient is φ = 65698160.

The previous prime is 108401989. The next prime is 108401999. The reversal of 108401997 is 799104801.

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 108401997 - 2³ = 108401989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108401999) 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, 1642422 + ... + 1642487.

It is an arithmetic number, because the mean of its divisors is an integer number (19709460).

Almost surely, 2^108401997 is an apocalyptic number.

It is an amenable number.

108401997 is a deficient number, since it is larger than the sum of its proper divisors (49273683).

108401997 is a wasteful number, since it uses less digits than its factorization.

108401997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284923.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 108401997 is about 10411.6279706874. The cubic root of 108401997 is about 476.8104455398.

The spelling of 108401997 in words is "one hundred eight million, four hundred one thousand, nine hundred ninety-seven".