109771397 has 8 divisors (see below), whose sum is σ = 116474112. Its totient is φ = 103096000.

The previous prime is 109771357. The next prime is 109771421. The reversal of 109771397 is 793177901.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 109771397 - 2¹⁰ = 109770373 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 (109771327) 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, 1772 + ... + 14922.

It is an arithmetic number, because the mean of its divisors is an integer number (14559264).

Almost surely, 2^109771397 is an apocalyptic number.

109771397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

109771397 is a deficient number, since it is larger than the sum of its proper divisors (6702715).

109771397 is a wasteful number, since it uses less digits than its factorization.

109771397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13659.

The product of its (nonzero) digits is 83349, while the sum is 44.

The square root of 109771397 is about 10477.1845932006. The cubic root of 109771397 is about 478.8098364312.

The spelling of 109771397 in words is "one hundred nine million, seven hundred seventy-one thousand, three hundred ninety-seven".