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39668141 = 471814663
BaseRepresentation
bin1001011101010…
…0100110101101
32202122100110102
42113110212231
540123340031
63534120445
7661113362
oct227244655
982570412
1039668141
1120434297
1211350125
1382ab796
1453a8469
1537387cb
hex25d49ad

39668141 has 8 divisors (see below), whose sum is σ = 40744704. Its totient is φ = 38601360.

The previous prime is 39668137. The next prime is 39668147. The reversal of 39668141 is 14186693.

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 39668141 - 22 = 39668137 is a prime.

It is a super-2 number, since 2×396681412 = 3147122820791762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39668095 and 39668104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39668147) 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, 6176 + ... + 10838.

It is an arithmetic number, because the mean of its divisors is an integer number (5093088).

Almost surely, 239668141 is an apocalyptic number.

It is an amenable number.

39668141 is a deficient number, since it is larger than the sum of its proper divisors (1076563).

39668141 is a wasteful number, since it uses less digits than its factorization.

39668141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891.

The product of its digits is 31104, while the sum is 38.

The square root of 39668141 is about 6298.2649198013. The cubic root of 39668141 is about 341.0467768065.

The spelling of 39668141 in words is "thirty-nine million, six hundred sixty-eight thousand, one hundred forty-one".

Divisors: 1 47 181 4663 8507 219161 844003 39668141