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971039069 = 71113970069
BaseRepresentation
bin111001111000001…
…110000101011101
32111200011220011222
4321320032011131
53442041222234
6240204423125
733030460460
oct7170160535
92450156158
10971039069
11459143030
12231247aa5
1312623a140
1492d6d2d7
155a3b042e
hex39e0e15d

971039069 has 16 divisors (see below), whose sum is σ = 1303774080. Its totient is φ = 698448960.

The previous prime is 971039059. The next prime is 971039077. The reversal of 971039069 is 960930179.

It is a happy number.

It is not a de Polignac number, because 971039069 - 224 = 954261853 is a prime.

It is a super-2 number, since 2×9710390692 = 1885833747048773522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971039059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484034 + ... + 486035.

It is an arithmetic number, because the mean of its divisors is an integer number (81485880).

Almost surely, 2971039069 is an apocalyptic number.

It is an amenable number.

971039069 is a deficient number, since it is larger than the sum of its proper divisors (332735011).

971039069 is a wasteful number, since it uses less digits than its factorization.

971039069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970100.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 971039069 is about 31161.4997873979. The cubic root of 971039069 is about 990.2516345012.

The spelling of 971039069 in words is "nine hundred seventy-one million, thirty-nine thousand, sixty-nine".

Divisors: 1 7 11 13 77 91 143 1001 970069 6790483 10670759 12610897 74695313 88276279 138719867 971039069