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109425961 = 2913072887
BaseRepresentation
bin1101000010110…
…11010100101001
321121220102012101
412201123110221
5211003112321
614505213401
72466051061
oct641332451
9247812171
10109425961
115684a387
1230791261
1319893cb8
14107663a1
159917791
hex685b529

109425961 has 8 divisors (see below), whose sum is σ = 113325120. Its totient is φ = 105535248.

The previous prime is 109425937. The next prime is 109425977. The reversal of 109425961 is 169524901.

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 109425961 - 25 = 109425929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109425961.

It is not an unprimeable number, because it can be changed into a prime (109425361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36460 + ... + 39346.

It is an arithmetic number, because the mean of its divisors is an integer number (14165640).

Almost surely, 2109425961 is an apocalyptic number.

It is an amenable number.

109425961 is a deficient number, since it is larger than the sum of its proper divisors (3899159).

109425961 is a wasteful number, since it uses less digits than its factorization.

109425961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 109425961 is about 10460.6864497508. The cubic root of 109425961 is about 478.3070583594.

The spelling of 109425961 in words is "one hundred nine million, four hundred twenty-five thousand, nine hundred sixty-one".

Divisors: 1 29 1307 2887 37903 83723 3773309 109425961