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69430109 = 721416941
BaseRepresentation
bin1000010001101…
…10101101011101
311211122102012112
410020312231131
5120233230414
610520043405
71502101100
oct410665535
9154572175
1069430109
1136211961
121b303565
13114cc308
149314737
156166d3e
hex4236b5d

69430109 has 6 divisors (see below), whose sum is σ = 80765694. Its totient is φ = 59511480.

The previous prime is 69430103. The next prime is 69430117. The reversal of 69430109 is 90103496.

It can be written as a sum of positive squares in only one way, i.e., 69388900 + 41209 = 8330^2 + 203^2 .

It is not a de Polignac number, because 69430109 - 212 = 69426013 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69430103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708422 + ... + 708519.

It is an arithmetic number, because the mean of its divisors is an integer number (13460949).

Almost surely, 269430109 is an apocalyptic number.

It is an amenable number.

69430109 is a deficient number, since it is larger than the sum of its proper divisors (11335585).

69430109 is a wasteful number, since it uses less digits than its factorization.

69430109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416955 (or 1416948 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 69430109 is about 8332.4731622730. The cubic root of 69430109 is about 411.0070603784.

It can be divided in two parts, 694 and 30109, that added together give a palindrome (30803).

The spelling of 69430109 in words is "sixty-nine million, four hundred thirty thousand, one hundred nine".

Divisors: 1 7 49 1416941 9918587 69430109