109423917 has 12 divisors (see below), whose sum is σ = 167354460. Its totient is φ = 68658048.

The previous prime is 109423913. The next prime is 109423933. The reversal of 109423917 is 719324901.

It can be written as a sum of positive squares in 2 ways, for example, as 63536841 + 45887076 = 7971^2 + 6774^2 .

It is not a de Polignac number, because 109423917 - 2² = 109423913 is a prime.

It is a super-2 number, since 2×109423917² = 23947187223245778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109423913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357442 + ... + 357747.

It is an arithmetic number, because the mean of its divisors is an integer number (13946205).

Almost surely, 2^109423917 is an apocalyptic number.

109423917 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

109423917 is a deficient number, since it is larger than the sum of its proper divisors (57930543).

109423917 is a wasteful number, since it uses less digits than its factorization.

109423917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715212 (or 715209 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 109423917 is about 10460.5887501612. The cubic root of 109423917 is about 478.3040801944.

The spelling of 109423917 in words is "one hundred nine million, four hundred twenty-three thousand, nine hundred seventeen".