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109902961 = 7142910987
BaseRepresentation
bin1101000110011…
…11110001110001
321122210122112001
412203033301301
5211113343321
614523334001
72503105540
oct643176161
9248718461
10109902961
11570457a3
1230981301
1319a0014c
141084c157
1599adc91
hex68cfc71

109902961 has 8 divisors (see below), whose sum is σ = 125702720. Its totient is φ = 94128048.

The previous prime is 109902929. The next prime is 109902971. The reversal of 109902961 is 169209901.

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

It is not a de Polignac number, because 109902961 - 25 = 109902929 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 109902961.

It is not an unprimeable number, because it can be changed into a prime (109902911) 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, 4510 + ... + 15496.

It is an arithmetic number, because the mean of its divisors is an integer number (15712840).

Almost surely, 2109902961 is an apocalyptic number.

It is an amenable number.

109902961 is a deficient number, since it is larger than the sum of its proper divisors (15799759).

109902961 is a wasteful number, since it uses less digits than its factorization.

109902961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12423.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 109902961 is about 10483.4613081749. The cubic root of 109902961 is about 479.0010489239.

The spelling of 109902961 in words is "one hundred nine million, nine hundred two thousand, nine hundred sixty-one".

Divisors: 1 7 1429 10003 10987 76909 15700423 109902961